Log in

Relevant bibliographies by topics / 2-a] carbazole / Journal articles

To see the other types of publications on this topic, follow the link: 2-a] carbazole.

Journal articles on the topic '2-a] carbazole'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic '2-a] carbazole.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Gao, Wentao, Meiru Zheng, and Yang Li. "A novel and facile synthesis of 3-(2-benzofuroyl)- and 3,6-bis(2-benzofuroyl)carbazole derivatives." Beilstein Journal of Organic Chemistry 7 (November 17, 2011): 1533–40. http://dx.doi.org/10.3762/bjoc.7.180.

Full text

Abstract:

A facile synthesis of hitherto unreported 3-(2-benzofuroyl)carbazoles 3a–k, 3,6-bis(2-benzofuroyl)carbazoles 5a–k, and naphtho[2,1-b]furoylcarbazoles 3l and 5l is described. The synthesis mainly relies on the ultrasound-assisted Rap–Stoermer reaction of 3-chloroacetyl- (1) or 3,6-dichloroacetyl-9-ethyl-9H-carbazole (4) with various salicylaldehydes 2a–k as well as 2-hydroxy-1-naphthaldehyde (2l) in CH3CN with the presence of PEG-400 as catalyst. The procedure offers easy access to benzofuroylcarbazoles in short reaction times and the products are obtained in moderate to good yields.

APA, Harvard, Vancouver, ISO, and other styles

2

Li, Yang, and Wentao Gao. "Synthesis of 3-(quinolin-2-yl)- and 3,6-bis(quinolin-2-yl)-9H-carbazoles." Beilstein Journal of Organic Chemistry 6 (October 8, 2010): 966–72. http://dx.doi.org/10.3762/bjoc.6.108.

Full text

Abstract:

A simple and efficient synthesis of novel 3-(quinolin-2-yl)- and 3,6-bis(quinolin-2-yl)-9H-carbazoles, utilizing sodium ethoxide as a catalyst via a Friedländer condensation reaction between 3-acetyl-9-ethyl-9H-carbazole or 3,6-diacetyl-9-ethyl-9H-carbazole and β-aminoaldehydes or β-aminoketones is described. All of the title compounds were obtained in good yields of 52–72% and their structures were confirmed by IR, 1H NMR, MS, and elemental analysis.

APA, Harvard, Vancouver, ISO, and other styles

3

Benavides, Adriana, Hugo A. Jiménez-Vázquez, José Luis Avila-Melo, Alfredo Fuentes-Gutiérrez, and Joaquín Tamariz. "Total Synthesis of the Natural Carbazoles O-Demethylmurrayanine and Murrastanine A, and of a C4,C4′ Symmetric Murrastanine A Dimer from N-Phenyl-4,5-dimethylene-1,3-oxazolidin-2-one." Synthesis 53, no. 13 (2021): 2201–11. http://dx.doi.org/10.1055/a-1385-9052.

Full text

Abstract:

AbstractThe synthesis of natural carbazoles O-demethylmurrayanine and murrastanine A starting from the title exo-heterocyclic diene is described. In the synthesis of murrastanine A, its symmetric C4,C4′ dimer can be obtained as the sole product under rather mild conditions. In all cases, the key intermediate is the same diarylamine. The carbazole nucleus is obtained through a Pd-promoted cyclization of the appropriate diarylamine. For the synthesis of O-demethylmurrayanine, the cyclization takes place on a silylated derivative. The crystal structures of murrayanine, two diarylamines, and two

APA, Harvard, Vancouver, ISO, and other styles

4

Yuan, Zhi-Guang, Qiang Wang, Ang Zheng, et al. "Visible light-photocatalysed carbazole synthesis via a formal (4+2) cycloaddition of indole-derived bromides and alkynes." Chemical Communications 52, no. 29 (2016): 5128–31. http://dx.doi.org/10.1039/c5cc10542k.

Full text

Abstract:

We have developed an unprecedented route to carbazole by a visible light-photocatalysed formal (4+2) cycloaddition of indole-derived bromides and alkynes. Using this method, a wide range of highly functionalised carbazoles were produced in good yields under mild conditions.

APA, Harvard, Vancouver, ISO, and other styles

5

Prabakaran, Kumaresan, and Karnam Jayaramapillai Rajendra Prasad. "Synthesis of biogenetically possible 3-substituted pyrano-[2,3-a]carbazoles." Journal of Chemical Research 2009, no. 10 (2009): 619–22. http://dx.doi.org/10.3184/030823409x12523375431104.

Full text

Abstract:

3-Substituted pyrano[2,3- a]carbazol-2(11 H)-ones have been synthesised by the reaction of 1-hydroxy-carbazole-2-carbaldehyde with malononitrile, ethyl cyanoacetate, Meldrum's acid, (carbethoxymethylene)triphenylphosphorane, ethyl benzoylacetate and phenylacetonitrile.

APA, Harvard, Vancouver, ISO, and other styles

6

Srour, Hassan, Thu-Hong Doan, Elisabeth Da Silva, Richard J. Whitby, and Bernhard Witulski. "Synthesis and molecular properties of methoxy-substituted diindolo[3,2-b:2′,3′-h]carbazoles for organic electronics obtained by a consecutive twofold Suzuki and twofold Cadogan reaction." Journal of Materials Chemistry C 4, no. 26 (2016): 6270–79. http://dx.doi.org/10.1039/c6tc02009g.

Full text

Abstract:

A set of methoxy-substituted diindolo[3,2-b:2′,3′-h]carbazoles has been synthesized by twofold Suzuki–Miyaura, Cadogan andN-alkylation reactions starting fromN-hexyl-2,7-dibromo-3,6-dinitro carbazole.

APA, Harvard, Vancouver, ISO, and other styles

7

Karaaslan, Cigdem, Hande Gurer-Orhan, Sibel Suzen, et al. "Behaviour of 9-Ethyl-9H-carbazole Hydrazone Derivatives Against Oxidant Systems." Croatica chemica acta 92, no. 1 (2019): 87–94. http://dx.doi.org/10.5562/cca3481.

Full text

Abstract:

Antioxidants are helpful in prevention of several diseases related with oxidative stress including neurodegenerative disorders. In recent studies, carbazoles were given proof of promising antioxidant activities. In this article, 9-ethyl-9H-carbazole hydrazone derivatives were synthesized, characterized and their in vitro antioxidant activity and possible cytotoxic effects were investigated. Furthermore, protective effect of the synthesized derivatives against amyloid β-induced damage in PC12 neuronal cells was examined by using MTT assay. The newly synthesized carbazoles were found to have rad

APA, Harvard, Vancouver, ISO, and other styles

8

Choi, Kyung Hyun, Jae Min Kim, Won Jae Chung, and Jun Yeob Lee. "Effects of Substitution Position of Carbazole-Dibenzofuran Based High Triplet Energy Hosts to Device Stability of Blue Phosphorescent Organic Light-Emitting Diodes." Molecules 26, no. 9 (2021): 2804. http://dx.doi.org/10.3390/molecules26092804.

Full text

Abstract:

High triplet energy hosts were developed through the modification of the substitution position of carbazole units. Two carbazole-dibenzofuran-derived compounds, 9,9′-(dibenzo[b,d]furan-2,6-diyl)bis(9H-carbazole) (26CzDBF) and 4,6-di(9H-carbazol-9-yl)dibenzo[b,d]furan (46CzDBF), were synthesized for achieving high triplet energy hosts. In comparison with the reported hole transport type host, 2,8-di(9H-carbazol-9-yl)dibenzo[b,d]furan (28CzDBF), 26CzDBF and 46CzDBF maintained high triplet energy over 2.95 eV. The device performances of the hosts were evaluated with electron transport type host,

APA, Harvard, Vancouver, ISO, and other styles

9

Danish, Isravel Antony, and Karnam Jayarampillai Rajendra Prasad. "Synthesis of pyrazolino- and thiopyrimido- fused carbazoles from 2-ethylidene-3,4-dihydrocarbazol-1(2H)-ones." Journal of Chemical Research 2005, no. 2 (2005): 107–11. http://dx.doi.org/10.3184/0308234054497056.

Full text

Abstract:

Annelated carbazoles namely, 3-methyl-1,2,3,3a,4,5,5a,10,10a,10b-decahydropyrazolino[4,5-a]carbazoles, 4a–e and 4-methyl-1,3,4,5,6,11-hexahydropyrimido[4,5-a]carbazole-2-thiones 5a–e were synthesised in excellent yields from 2-ethylidene-3,4-dihydrocarbazol-1(2H)-ones 2a–e, derived from the easily accessible 3,4-dihydrocarbazol-1(2H)-ones 1a–e.

APA, Harvard, Vancouver, ISO, and other styles

10

Wantulok, Jakub, Daniel Swoboda, Jacek E. Nycz, et al. "Direct Amination of Nitroquinoline Derivatives via Nucleophilic Displacement of Aromatic Hydrogen." Molecules 26, no. 7 (2021): 1857. http://dx.doi.org/10.3390/molecules26071857.

Full text

Abstract:

The vicarious nucleophilic substitution of hydrogen (VNS) reaction in electron-deficient nitroquinolines was studied. Properties of all new products have been characterized by several techniques: MS, HRMS, FTIR, GC-MS, electronic absorption spectroscopy, and multinuclear NMR. The structures of 4-chloro-8-nitroquinoline, 8-(tert-butyl)-2-methyl-5-nitroquinoline, 9-(8-nitroquinolin-7-yl)-9H-carbazole and (Z)-7-(9H-carbazol-9-yl)-8-(hydroxyimino)quinolin-5(8H)-one were determined by single-crystal X-ray diffraction measurements. The 9-(8-nitroquinolin-7-yl)-9H-carbazole and (Z)-7-(9H-carbazol-9-y

APA, Harvard, Vancouver, ISO, and other styles

11

Gangadharan, Rajeswari, P. Narayanan, K. Sethusankar, Velu Saravanan, and Arasambattu K. Mohanakrishnan. "Crystal structures of three carbazole derivatives: 12-ethyl-7-phenylsulfonyl-7H-benzofuro[2,3-b]carbazole, (1), 2-(4,5-dimethoxy-2-nitrophenyl)-4-hydroxy-9-phenylsulfonyl-9H-carbazole-3-carbaldehyde, (2), and 12-phenyl-7-phenylsulfonyl-7H-benzofuro[2,3-b]carbazole, (3)." Acta Crystallographica Section E Crystallographic Communications 72, no. 12 (2016): 1744–50. http://dx.doi.org/10.1107/s2056989016016819.

Full text

Abstract:

The three title compounds, C26H19NO3S, (1), C27H20N2O8S, (2), and C30H19NO3S, (3), are carbazole derivatives, where (1) and (3) are heterocycle-containing carbazoles with a benzofuran moiety fused to a carbazole unit. In (2), a dimethoxynitrophenyl ring is attached to the carbazole moiety. In the three derivatives, a phenylsulfonyl group is attached to the N atom of the carbazole unit. Compound (1) crystallizes with two independent molecules in the asymmetric unit (AandB). The carbazole skeleton in the three compounds is essentially planar. In compound (1), the benzene ring of the phenylsulfon

APA, Harvard, Vancouver, ISO, and other styles

12

Liebau, Verena, Mathias Noltemeyer, Jörg Magull, and Uwe Klingebiel. "Carbazolylsilane: Synthese und Kristallstrukturen / Carbazolylsilanes: Synthesis and Crystal Structures." Zeitschrift für Naturforschung B 59, no. 9 (2004): 1045–50. http://dx.doi.org/10.1515/znb-2004-0916.

Full text

Abstract:

Carbazole reacts with n-BuLi and fluorosilanes to give the lithium carbazolide (1) which crystallizes as a dimer from THF. In the reactions of 1 and difluorosilanes, F2SiR2, the carbazolylsilanes C12H8N-SiFR2 (2 - 4 R = Me (2), i Pr (3), t-Bu (4)), are obtained. Bis(carbazolyl)silanes, (C12H8N)2SiFR, are formed in the reaction of 1 with trifluorosilanes, F3SiR, in a molar ratio of 2:1, R = t-Bu (5), Ph (6), Me (7). Using F3SiMe and 1 in a molar ratio of 1:3 the tris(carbazolyl)silane (C12H8N)3SiMe (8) is isolated. The carbazolylfluorosilane 3 reacts with n-BuLi to give 1 and n-butyldiisopropyl

APA, Harvard, Vancouver, ISO, and other styles

13

Kumar, V., J. Reisch, and A. Wickramasinghe. "Glycomaurin and Glycomaurrol, New Carbazole Alkaloids From Glycosmis mauritiana (Rutaceae) Bark." Australian Journal of Chemistry 42, no. 8 (1989): 1375. http://dx.doi.org/10.1071/ch9891375.

Full text

Abstract:

The stem bark of Glycosmis mauritiana contained the acridone alkaloids noracronycine and des-N- methylacronycine, and two new carbazole alkaloids, 3,3,10-trimethyl-3,7-dihydropyrano[2,3-c] carbazole (glycomaurin) and 6-methyl-4-(3′-methylbut-2′-enyl)carbazol-3-ol (glycomaurrol), whose structures were confirmed by synthesis and by cyclization to dihydroglycomaurin respectively. Glycomaurin has a ring system which has not been previously found in nature.

APA, Harvard, Vancouver, ISO, and other styles

14

Luparello, Claudio, Ilenia Cruciata, Andreas C. Joerger, et al. "Genotoxicity and Epigenotoxicity of Carbazole-Derived Molecules on MCF-7 Breast Cancer Cells." International Journal of Molecular Sciences 22, no. 7 (2021): 3410. http://dx.doi.org/10.3390/ijms22073410.

Full text

Abstract:

The carbazole compounds PK9320 (1-(9-ethyl-7-(furan-2-yl)-9H-carbazol-3-yl)-N-methylmethanamine) and PK9323 (1-(9-ethyl-7-(thiazol-4-yl)-9H-carbazol-3-yl)-N-methylmethanamine), second-generation analogues of PK083 (1-(9-ethyl-9H-carbazol-3-yl)-N-methylmethanamine), restore p53 signaling in Y220C p53-mutated cancer cells by binding to a mutation-induced surface crevice and acting as molecular chaperones. In the present paper, these three molecules have been tested for mutant p53-independent genotoxic and epigenomic effects on wild-type p53 MCF-7 breast adenocarcinoma cells, employing a combinat

APA, Harvard, Vancouver, ISO, and other styles

15

Jasztold-Howorko, Ryszard, Włodzimierz Doroszkiewicz, Gabriela Bugla-Płoskońska, Alain Croisy, and Daniele Carrez. "The Synthesis and Bioloqical Properties of a 1-(2-Methylpyridin-4-yl) Olivacine Derivative." Scientia Pharmaceutica 73, no. 3 (2005): 101–12. http://dx.doi.org/10.3797/scipharm.aut-05-09.

Full text

Abstract:

Starting from 2-(6-methoxy-1-methyl-9H-carbazol-2-yl)ethylamine and 2-methylisonicotinic acid, 9-hydroxy-5,6-dimethyl-1-(2-methylpyridin-4-yl)-6H-pyrido[4,3-b]carbazole (5) was obtained. The new compound showed significant cytostatic activity for cultured L1210 cells and no inhibition of growth of the E. coli O56 strain was observed. The bactericidal activity of normal human serum against E. coli O56 was not affected by the examined compound 5 and its isomer 4.

APA, Harvard, Vancouver, ISO, and other styles

16

Irgashev, Roman A., Nikita A. Kazin, Gennady L. Rusinov, and Valery N. Charushin. "Nitration of 5,11-dihydroindolo[3,2-b]carbazoles and synthetic applications of their nitro-substituted derivatives." Beilstein Journal of Organic Chemistry 13 (July 14, 2017): 1396–406. http://dx.doi.org/10.3762/bjoc.13.136.

Full text

Abstract:

A new general approach to double nitration of 6,12-di(hetero)aryl-substituted and 6,12-unsubstituted 5,11-dialkyl-5,11-dihydroindolo[3,2-b]carbazoles by acetyl nitrate has been developed to obtain their 2,8-dinitro and 6,12-dinitro derivatives, respectively. A formation of mono-nitro derivatives (at C-2 or C-6) from the same indolo[3,2-b]carbazoles has also been observed in several cases. Reduction of 2-nitro and 2,8-dinitro derivatives with zinc powder and hydrochloric acid has afforded 2-amino- and 2,8-diamino-substituted indolo[3,2-b]carbazoles, while reduction of 6,12-dinitro derivatives u

APA, Harvard, Vancouver, ISO, and other styles

17

Wang, Yongqiang, Jinzhong Zhao, Dongdong Guo, Bin Li, Wenmei Gao, and Wuxia Zhang. "Study on Palladium(II)-Catalyzed Mono-1-alkenylation of 9H-Carbazoles." Synlett 32, no. 08 (2021): 800–804. http://dx.doi.org/10.1055/a-1387-5435.

Full text

Abstract:

AbstractA general and efficient method is reported for the direct mono-1-alkenylation of 9H-carbazole molecules with divalent palladium as a catalyst and an N-(2-pyridyl)sulfanyl directing group. This method also provides an efficient synthetic route for the synthesis of cross-dialkenylated carbazoles.

APA, Harvard, Vancouver, ISO, and other styles

18

Konidena, Rajendra Kumar, Kyung Hyung Lee, and Jun Yeob Lee. "Molecular design featuring carbazole-decorated 15H-diindolo[2,3-b:1′,2′,3′-lm]carbazole for improved efficiency and lifetime of thermally activated delayed fluorescence emitters." Journal of Materials Chemistry C 8, no. 7 (2020): 2491–99. http://dx.doi.org/10.1039/c9tc05855a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Raju, Potharaju, Thiyagarajan Mageshwaran, Bose Ramalingam, and Arasambattu Mohanakrishnan. "Synthesis of 2,3-Disubstituted Carbazoles, Benzo[c]carbazoles, and Phenanthrenes Through FeCl3-Mediated Cyclization of Triene Frameworks." SynOpen 02, no. 03 (2018): 0246–50. http://dx.doi.org/10.1055/s-0037-1609936.

Full text

Abstract:

A facile synthesis of 2,3-disubstituted carbazoles through electrocyclization of 2,3-divinylindoles using FeCl3 in DMF at reflux is reported. The methodology was found to be applicable for smooth transformation of 3-aryl-2-vinylindole as well as 2-styrylbiphenyl into the respective benzo[c]carbazole and phenanthrene.

APA, Harvard, Vancouver, ISO, and other styles

20

Sharma, Divyanshu, Nitin Kumar, and Devender Pathak. "Synthesis, characterization and biological evaluation of some newer carbazole derivatives." Journal of the Serbian Chemical Society 79, no. 2 (2014): 125–32. http://dx.doi.org/10.2298/jsc130123069s.

Full text

Abstract:

A series of novel 5-((9H-carbazol-9-yl)methyl)-N-((substituted phenyl)(piperazin-1-yl)methyl)-1,3,4-oxadiazol-2-amine (4a-4o) derivatives was synthesized by starting with carbazole which on reaction with ethyl choloroacetate yielded ethyl 2-(9H-carbazole-9-yl)acetate (1), compound (1) on reaction with semicarbazide followed by cyclisation with sulphuric acid gave 5-((9H-carbazole-9-yl)-1,3,4-oxadiazol-2-amine (3) which through Mannich reaction with piperazine and a variety of aromatic aldehydes in the presence of acetic acid yielded the titled compounds (4a-4o). The structures of compounds wer

APA, Harvard, Vancouver, ISO, and other styles

21

Majumdar, K. C., U. K. Kundu, U. Das, N. K. Jana, and B. Roy. "N-Iodosuccinimide An effective reagent for regioselective heterocyclization of o-cyclohex-2′-enylanilines for the synthesis of hexahydrocarbazoles." Canadian Journal of Chemistry 83, no. 1 (2005): 63–67. http://dx.doi.org/10.1139/v04-162.

Full text

Abstract:

A number of carbazoles are synthesized in good yields by the N-iodosuccinimide mediated heterocyclization of o-cyclohex-2′-enylanilines in acetonitrile at 10 °C for 45 min followed by heating with palladiumcharcoal (10%) in benzene (80 °C) for 1820 h.Key words: N-iodosuccinimide, hexahydrocarbazole, heterocyclization, carbazole, Claisen rearrangement.

APA, Harvard, Vancouver, ISO, and other styles

22

Tamariz, Joaquín, R. Hernández-Benitez, Daniel Zárate-Zárate, and Francisco Delgado. "Palladium-Catalyzed Synthesis of Diarylamines and 1- and 2-Oxygenated Carbazoles: Total Syntheses of Natural Alkaloids Clauraila A, Clausenal, Clausine P, and 7-Methoxy-O-methylmukonal." Synthesis 49, no. 18 (2017): 4357–71. http://dx.doi.org/10.1055/s-0036-1588467.

Full text

Abstract:

The scope and limitations of the strategy for the conversion of 2-anilinocyclohexenones and N-arylcyclohexane enaminones into the 1- and 2-oxygenated carbazole scaffolds, respectively, were evaluated. The one-pot palladium(0)-catalyzed aromatization/methylation process of the aforementioned substrates provided a diversity of the corresponding diarylamines. A subsequent palladium(II)-catalyzed cyclization of the latter delivered the desired 1- and 2-oxygenated carbazoles in good overall yields. Special attention was given to the synthesis of the uncommon 1,8-disubstituted carbazoles. This metho

APA, Harvard, Vancouver, ISO, and other styles

23

Golubeva, I. S., N. P. Yavorskaya, L. V. Ektova, et al. "ANTITUMOR ACTIVITY OF SOME DERIVATIVES OF INDOLO[2,3-A]CARBAZOLES N-GLYCOSIDES WITH XYLOSE CARBOHYDRATE RESIDUE." Russian Journal of Biotherapy 19, no. 4 (2020): 86–93. http://dx.doi.org/10.17650/1726-9784-2020-19-4-86-93.

Full text

Abstract:

Introduction. The search for new antineoplastic agents in a series of indolo[2,3-a]-carbazole derivatives is an urgent and promising direction, since compounds with antitumor activity have been found in this class. In the chemical fusion laboratory, N.N. Blokhin National Medical Research Center оf the Ministry of Health of Russia has developed an original and effective method for the synthesis of glycosides of indolo[2,3-a]-pyrrolo[3,4-c]carbazoles, which makes it possible to synthesize derivatives of N-glycosides of indolo[2,3-a]carbazoles with different substituents in the heterocyclic parts

APA, Harvard, Vancouver, ISO, and other styles

24

Martin, Arputharaj E., and Karnam J. Rajendra Prasad. "Synthetic Utility of 1-Hydroxycarbazole-2-carbaldehydes - Syntheses of Furo-, Oxazino- and Pyranocarbazoles." Collection of Czechoslovak Chemical Communications 72, no. 11 (2007): 1579–90. http://dx.doi.org/10.1135/cccc20071579.

Full text

Abstract:

Reaction of 1-hydroxycarbazole-2-carbaldehydes 1 with phenacyl bromide yielded 2-benzoyl-10H-furo[2,3-a]carbazoles 2, whereas the reaction with ethyl bromoacetate yielded 1-oxo-1,2-dihydro[1,4]oxazino[2,3,4-jk]carbazole-4-carbaldehyde (4). The reaction of 1 with ethyl acetoacetate and also with diethyl malonate yielded the pyranocarbazoles 6 and 7, respectively. All the products were characterized by spectral and analytical means. Plausible mechanisms of product formation are proposed.

APA, Harvard, Vancouver, ISO, and other styles

25

Wang, Hui, Wen-Mo Liu, Jun Zhang, Jie-Ying Wu, and Yu-Peng Tian. "A tetranuclear organotin compound consisting of a core of three fused Sn2O2rings." Acta Crystallographica Section C Structural Chemistry 70, no. 2 (2014): 185–88. http://dx.doi.org/10.1107/s2053229614000758.

Full text

Abstract:

The crystal structure of the tetranuclear organotin compound 1,1,3,3,5,5,7,7-octabutyl-7-((E)-2-cyano-3-{9-[2-(2-methoxyethoxy)ethyl]-9H-carbazol-3-yl}prop-2-enoyloxy)-4,8-dimethyl-2,4,6,8-tetroxa-1,3,5,7-tetrastannatricyclo[4.2.0.02,5]oct-3-yl (E)-2-cyano-3-{9-[2-(2-methoxyethoxy)ethyl]-9H-carbazol-3-yl}prop-2-enoate, [Sn4(C4H9)8(C21H19N2O4)2(CH3O)2(μ3-O)2], consists of a core of three fused Sn2O2rings. The central ring consists of two Sn atoms each coordinated by twon-butyl chains, two μ3-bridging O atoms and one μ2-bridging methanolate O atom. The peripheral Sn2O2rings consist of one of the

APA, Harvard, Vancouver, ISO, and other styles

26

Schneider, Joanne, Robert J. Grosser, Koka Jayasimhulu, Weiling Xue, Brian Kinkle, and David Warshawsky. "Biodegradation of carbazole byRalstoniasp. RJGII.123 isolated from a hydrocarbon contaminated soil." Canadian Journal of Microbiology 46, no. 3 (2000): 269–77. http://dx.doi.org/10.1139/w99-131.

Full text

Abstract:

The use of microorganisms for bioremediation of contaminated soils may be enhanced with an understanding of the pathways involved in their degradation of hazardous compounds. Ralstonia sp. strain RJGII.123 was isolated from soil located at a former coal gasification plant, based on its ability to mineralize carbazole, a three-ring N-heterocyclic pollutant. Experiments were carried out with strain RJGII.123 and14C-carbazole (2 mg/L and 500 mg/L) as the sole organic carbon source. At 15 days, 80% of the 2 mg/L carbazole was recovered as CO2, and <1% remained as undegraded carbazole, while 24%

APA, Harvard, Vancouver, ISO, and other styles

27

Mandal, Suvra, Anupam Nayak, Samir K. Banerjee, Julie Banerji, and Avijit Banerji. "A New Carbazole Alkaloid from Murraya koenigii Spreng (Rutaceae)." Natural Product Communications 3, no. 10 (2008): 1934578X0800301. http://dx.doi.org/10.1177/1934578x0800301019.

Full text

Abstract:

A new carbazole alkaloid (kurryam) oxygenated at the 4-position, hitherto unknown among carbazole alkaloids, has been isolated from the seeds of an Indian medicinal plant, Murraya koenigii (Rutaceae). The structure has been established as 4-hydroxy-(2′,2′,3)-trimethyl-(6,7)-dimethoxy pyranocarbazole from extensive 2D NMR spectral studies. In addition, two known carbazole alkaloids, (2′,2′,3)-trimethyl 6-methoxy pyranocarbazole and (2′,2′,3)-trimethyl 6-hydroxy pyranocarbazole were isolated from the seeds of the same plant, of which (2′,2′,3)-trimethyl 6-methoxy pyranocarbazole exhibited signif

APA, Harvard, Vancouver, ISO, and other styles

28

Narayanan, P., K. Sethusankar, Velu Saravanan, and Arasambattu K. Mohanakrishnan. "2-(4,5-Dimethoxy-2-nitrophenyl)-4-methoxy-3-methyl-9-phenylsulfonyl-9H-carbazole." Acta Crystallographica Section E Structure Reports Online 70, no. 3 (2014): o336—o337. http://dx.doi.org/10.1107/s1600536814003535.

Full text

Abstract:

In the title compound, C28H24N2O7S, the carbazole system is essentially planar, with a maximum deviation of 0.0644 (19) Å for the C atom connected to the 4,5-dimethoxy-2-nitrophenyl group. The dihedral angle between the carbazole moiety and the dimethoxy-substituted nitrophenyl ring is 58.55 (7)°. The sulfonyl group forms two intramolecular C—H...O bonds with the adjacent carbazole system, forming two cyclicS(6) motifs. In the crystal, molecules are linked along theaaxis in bands consisting of cyclicR33(15) motifs through two further C—H...O hydrogen bonds.

APA, Harvard, Vancouver, ISO, and other styles

29

Zaini, Muhamad Fikri, Ibrahim Abdul Razak, Wan Mohd Khairul та Suhana Arshad. "Structural, Hirshfeld and DFT studies of conjugated D–π–A carbazole chalcone crystal". Acta Crystallographica Section E Crystallographic Communications 76, № 3 (2020): 387–91. http://dx.doi.org/10.1107/s2056989020002054.

Full text

Abstract:

A new conjugated carbazole chalcone compound, (E)-3-[4-(9,9a-dihydro-8aH-carbazol-9-yl)phenyl]-1-(4-nitrophenyl)prop-2-en-1-one (CPNC), C27H18N2O3, was synthesized using a Claisen–Schmidt condensation reaction. CPNC crystallizes in the monoclinic non-centrosymmetric space group Cc and adopts an s-cis conformation with respect to the ethylenic double bonds (C=O and C=C). The crystal packing features C—H...O and C—H...π interactions whose percentage contribution was quantified by Hirshfeld surface analysis. Quantum chemistry calculations including geometrical optimization and molecular electrost

APA, Harvard, Vancouver, ISO, and other styles

30

Qiao, Wenhua, Yu Chen, Fusheng Li, et al. "Novel efficient hole-transporting materials based on a 1,1′-bi-2-naphthol core for perovskite solar cells." RSC Advances 7, no. 1 (2017): 482–92. http://dx.doi.org/10.1039/c6ra25606f.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Imai, Yuki, Tsuyoshi Kawai, and Junpei Yuasa. "Metal ion clip: fine-tuning aromatic stacking interactions in the multistep formation of carbazole-bridged zinc(ii) complexes." Chemical Communications 51, no. 50 (2015): 10103–6. http://dx.doi.org/10.1039/c5cc03281d.

Full text

Abstract:

A carbazole-based triple bridging ligand (LH) consisting of two imidazole moieties with a diketone unit forms carbazole-bridged zinc(ii) complexes with structures of [(L<sup>−</sup>)<sub>4</sub>(Zn<sup>2+</sup>)<sub>n</sub>] (n = 2–6), where the strength of aromatic stacking interactions between the carbazole rings increases with an increase in the number of Zn<sup>2+</sup> ions bridged.

APA, Harvard, Vancouver, ISO, and other styles

32

V, Sangeetha. "SYNTHESIS OF ISOXAZOLO AND PYRAZOLINO ANNELATED CARBAZOLES FROM 2-(3'-(2'-CHLORO) QUINOLIDINE)-1-OXO-1, 2, 3, 4-TETRAHYDROCARBAZOLE AND 2-CHLORO-3-FORMYLQUINOLINE." Kongunadu Research Journal 2, no. 1 (2015): 29–31. http://dx.doi.org/10.26524/krj61.

Full text

Abstract:

1-Oxo-1,2,3,4-tetrahydrocarbazole (1) on mixed aldol condensation with 2-chloro-3-formylquinoline (2) ielded 2-(3'-(2'-chloro)quinolidine)-1-oxo-1,2,3,4-tetrahydrocarbazole (3), which was further treated with hydroxylamine hydrochloride and hydrazine hydrate in separate reactions to afford 4,5-dihydro-3-3'-(2'-chloro) quinoline -isoxazolo [3,4-a]carbazole (4) and 3'-(2'-chloro)- quinoline- 3,3a,4,5- tetrahydro- 2Hpyrazolino [3,4-a]carbazole (5). The prepared compounds were elaluated for their invitro antibacterial and antifungal activities against certain pathogenic fungal and bacterial strain

APA, Harvard, Vancouver, ISO, and other styles

33

Ma, Xiaoli, Hongwei Chen, Sisi Zhu, Pengfei Tu, and Yong Jiang. "Trimeric and Dimeric Carbazole Alkaloids from Murraya microphylla." Molecules 26, no. 18 (2021): 5689. http://dx.doi.org/10.3390/molecules26185689.

Full text

Abstract:

Seventeen new carbazole alkaloid derivatives, including a trimeric carbazole racemate, (±)-microphyltrine A (1), 15 dimeric carbazole racemates, (±)-microphyldines A–O (2–16), and a C-6–C-3″-methyl-linked dimeric carbazole, microphyldine P (17), were isolated from the leaves and stems of Murraya microphylla (Merr. et Chun) Swingle. The structures of the new compounds were elucidated on the basis of HRESIMS and NMR data analysis. The optically pure isomers of these isolated carbazole alkaloids were obtained by chiral HPLC separation and their absolute configurations were determined by electroni

APA, Harvard, Vancouver, ISO, and other styles

34

Narayanan, P., K. Sethusankar, Velu Saravanan, and Arasambattu K. Mohanakrishnan. "2-(4,5-Dimethoxy-2-nitrophenyl)-4-methoxy-9-phenylsulfonyl-9H-carbazole-3-carbaldehyde." Acta Crystallographica Section E Structure Reports Online 70, no. 4 (2014): o424—o425. http://dx.doi.org/10.1107/s1600536814005133.

Full text

Abstract:

In the title compound, C28H22N2O8S, the carbazole ring system is roughly planar, with a maximum deviation of 0.084 (3) Å for the C atom connected to the 4,5-dimethoxy-2-nitrophenyl ring. The dihedral angle between the carbazole system and the dimethoxy-substituted nitrophenyl ring is 57.05 (10)°. The aldehyde C atom deviates by 0.164 (5) Å from its attached carbazole ring system. The molecular structure is stabilized by C—H...O interactions which generate twoS(6) and oneS(7) ring motif. In the crystal, molecules are linked by C—H...O hydrogen bonds, formingR33(15) ring motifs, which are furthe

APA, Harvard, Vancouver, ISO, and other styles

35

Jung, Joori, Byeong Soo Shin, Jeong Won Kang, and Won-Sik Han. "Catalytic Hydrogenation and Dehydrogenation Reactions of N-alkyl-bis(carbazole)-Based Hydrogen Storage Materials." Catalysts 11, no. 1 (2021): 123. http://dx.doi.org/10.3390/catal11010123.

Full text

Abstract:

Recently, there have been numerous efforts to develop hydrogen-rich organic materials because hydrogen energy is emerging as a renewable energy source. In this regard, we designed and prepared four new materials based on N-alkyl-bis(carbazole), 9,9′-(2-methylpropane-1,3-diyl)bis(9H-carbazole) (MBC), 9,9′-(2-ethylpropane-1,3-diyl)bis(9H-carbazole) (EBC), 9,9′-(2-propylpropane-1,3-diyl)bis(9H-carbazole) (PBC), and 9,9′-(2-butylpropane-1,3-diyl)bis(9H-carbazole) (BBC), to investigate their hydrogen adsorption/hydrogen desorption reactivity depending on the length of the alkyl chain. The gravimetr

APA, Harvard, Vancouver, ISO, and other styles

36

Olgaç, Remziye, Yasemin Baygu, Burak Yıldız, Yaşar Gök, Baybars Köksoy, and Mahmut Durmuş. "Synthesis, characterization and photochemical properties of metallo porphyrazines substituted with alkyl linked carbazole, benzoazepine and phenothiazine moieties." Journal of Porphyrins and Phthalocyanines 21, no. 09 (2017): 599–610. http://dx.doi.org/10.1142/s1088424617500596.

Full text

Abstract:

Novel octa-phenotiazine, octa-benzoazepine and octa-carbazole substituted magnesium(II) (MgPz-I-III) and zinc(II) (ZnPz-I-III) porphyrazines were synthesized from 2,3-bis[6-(4a,10a-dihydro-phenothiazin-10-yl)-hexylsulfanyl]-but-2-enedinitrile (5), 2,3-bis [6-(4a,11a-dihydro-dibenzo[b,f]azepin-5-yl)-hexysulfan-yl]-but-2-enedinitrile (8) and 2,3-bis(6-carbazol-9-yl-hexylsulfanyl)-but-2-enedinitrile (10), respectively. These dinitrile derivatives 5, 8 and 10 were also prepared by the reaction of 1,2-dicyano-1,2-ethylenedithiolate di-sodium salt (4) with 10-(6-bromohexyl)-10H-phenothiazine (3), 5-

APA, Harvard, Vancouver, ISO, and other styles

37

Yang, Yun Xian, Ji Ping Yang, Bing Zhou, and Jing Yu Zhang. "Synthesis and Characterization of Novel Polymer of Vinyl Carbazole Bearing Thiophene Groups." Advanced Materials Research 562-564 (August 2012): 512–15. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.512.

Full text

Abstract:

Combination of vinyl carbazole and thiophene groups’ excellent thermal properties and optical properties, a novel polymer named poly(2,7-bi-2-thienyl-9-vinyl-9-H-carbazole) was synthesized via radical polymerization and Suzuki reaction. The polymer was characterized using Fourier transform infrared spectrometer(FT-IR), gel permeation chromatography(GPC), differential scanning calorimetry(DSC), and X-Ray fluorescence spectrometer(XRF). It was found that this π-conjugated polymer containing vinyl carbazole and thiophene groups gave a high glass transition temperature (Tg=251°C). This feature mad

APA, Harvard, Vancouver, ISO, and other styles

38

Muruganantham, Subramanian, Natarajan Nagarajan, Gunasekaran Velmurugan, et al. "Green light-emitting 2-(1H-indol-3-yl)acetonitrile-based D–A fluorophores – a combined theoretical and experimental study." Materials Chemistry Frontiers 1, no. 7 (2017): 1373–83. http://dx.doi.org/10.1039/c6qm00326e.

Full text

Abstract:

A series of new fluorophores based on 2-(1H-indol-3-yl)acetonitrile incorporated with various polycyclic aromatic hydrocarbons, carbazole, pyridine, triphenylamine was synthesised and their optical, thermal, electrochemical properties were evaluated.

APA, Harvard, Vancouver, ISO, and other styles

39

Pawluć, Piotr, Adrian Franczyk, Jȩdrzej Walkowiak, Grzegorz Hreczycho, Maciej Kubicki та Bogdan Marciniec. "(E)-9-(2-Iodovinyl)-9H-carbazole: A New Coupling Reagent for the Synthesis of π-Conjugated Carbazoles". Organic Letters 13, № 8 (2011): 1976–79. http://dx.doi.org/10.1021/ol200350a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Gassner, Cemena, Ronny Hesse, Arndt W. Schmidt, and Hans-Joachim Knölker. "Total synthesis of the cyclic monoterpenoid pyrano[3,2-a]carbazole alkaloids derived from 2-hydroxy-6-methylcarbazole." Org. Biomol. Chem. 12, no. 33 (2014): 6490–99. http://dx.doi.org/10.1039/c4ob01151a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Wrobel, Norma, Dieter Schollmeyer, and Heiner Detert. "2,7-Bis(2-nitrophenyl)-9-octyl-9H-carbazole." Acta Crystallographica Section E Structure Reports Online 68, no. 4 (2012): o1249. http://dx.doi.org/10.1107/s1600536812012780.

Full text

Abstract:

The title compound, C32H31N3O4, was obtained in a Suzuki coupling of carbazole diboronic acid and bromonitrobenzene. In the crystal, the molecule adopts a non-symmetric conformation. The carbazole ring system is approximately planar [maximum deviation from the least-squares plane = 0.039 (2) Å]. The planes of the carbazole unit and the benzene rings subtend dihedral angles of 48.42 (7) and 41.81 (6)°. The dihedral angles between the planes of the nitrophenyl rings and the nitro groups are 44.34 (19) and 61.64 (15)°. The crystal is built from two strands of parallel molecules with interdigitate

APA, Harvard, Vancouver, ISO, and other styles

42

Gruzdev, Matvey, Ulyana Chervonova, Arkadiy Kolker, et al. "Dendritic Iron(III) Carbazole Complexes: Structural, Optical, and Magnetic Characteristics." Materials 14, no. 18 (2021): 5445. http://dx.doi.org/10.3390/ma14185445.

Full text

Abstract:

This paper focuses on the synthesis, structural characterization, and study of the optical, magnetic, and thermal properties of novel architectures combining metal ions as magnetoactive centers and photoactive blocks formed by carbazole units. For this purpose, a series of azomethine complexes of the composition [Fe(L)2]X (L = 3,6-bis[(3′,6′-di-tert-butyl-9-carbazol)-9-carbazol]benzoyloxy-4-salicylidene-N′-ethyl-N-ethylenediamine, X = NO3−, Cl−, PF6−) were synthesized by the reaction of metal salts with Schiff bases in a mixture of solvents. The UV–Vis absorption properties were studied in dic

APA, Harvard, Vancouver, ISO, and other styles

43

Long, Solida, Joana B. Loureiro, Carla Carvalho, et al. "Semi-Synthesis of Small Molecules of Aminocarbazoles: Tumor Growth Inhibition and Potential Impact on p53." Molecules 26, no. 6 (2021): 1637. http://dx.doi.org/10.3390/molecules26061637.

Full text

Abstract:

The tumor suppressor p53 is inactivated by mutation in approximately 50% of human cancers. Small molecules that bind and stabilize those mutants may represent effective anticancer drugs. Herein, we report the tumor cell growth inhibitory activity of carbazole alkaloids and amino derivatives, as well as their potential activation of p53. Twelve aminocarbazole alkaloids were semi-synthesized from heptaphylline (1), 7-methoxy heptaphylline (2), and 7-methoxymukonal (3), isolated from Clausena harmandiana, using a reductive amination protocol. Naturally-occurring carbazoles 1–3 and their amino der

APA, Harvard, Vancouver, ISO, and other styles

44

Tang, Huai Jun, Li Ying Wei, Qian Luo, Xian Wang Shen, and Chang Li Liu. "Effect of 1-(9-Ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione on Properties of Luminescent Europium (III) Complexes." Advanced Materials Research 834-836 (October 2013): 215–20. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.215.

Full text

Abstract:

In order to understand the effect of β-diketone ligands containing carbazole group on luminescent europium (III) complexes, a series of europium (III) complexes (Phen)Eu (DBM)3-nLnwith 1-(9-Ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione (L) were synthesized and investigated contrastively (n = 0, 1, 2, 3; DBM: dibenzoylmethane; Phen: 1,10-phenanthroline). The results show amorphous nature, glass transition temperatures and luminescent intensity can be improved obviously by 1-(9-ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione, at the same time, their thermal decomposition temper

APA, Harvard, Vancouver, ISO, and other styles

45

Ashok, Dongamanti, Sidda Ravi, Vijaya Lakshmi, and Arram Ganesh. "One-pot synthesis of carbazole based 3-hydroxy-4H-chromen-4-ones by modified Algar-Flynn-Oyamada reaction and their antimicrobial activity." Journal of the Serbian Chemical Society 80, no. 11 (2015): 1361–66. http://dx.doi.org/10.2298/jsc141203051a.

Full text

Abstract:

A new series of 2-(9-ethyl-9H-carbazol-3-yl)-3-hydroxy-4Hchromen-4-ones have been synthesized from substituted 2-hydroxy acetophenones and 9-ethyl-9H-carbazole-3-carbaldehyde using NaOH and H2O2 by modified Algar-Flynn-Oyamada reaction. In this method flavonols are synthesized without isolating chalcones in good yields (70-82%). The structures of the compounds were established on the basis of 1H-NMR, 13CNMR, FT-IR and mass spectral and analytical data. All the compounds were evaluated for their antimicrobial activity against bacteria such as Staphylococus aureus, Bacillus subtilis, Escherichia

APA, Harvard, Vancouver, ISO, and other styles

46

Banerjee, Ankush, Samrat Sahu, and Modhu Sudan Maji. "Benzannulation of 2-Alkenylindoles using Aldehydes by Sequential Triple-Relay Catalysis: A Route to Carbazoles and Carbazole Alkaloids." Advanced Synthesis & Catalysis 359, no. 11 (2017): 1860–66. http://dx.doi.org/10.1002/adsc.201700092.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Khadir Fall, Serigne Abdou, Saïd Achamlale, Younas Aouine, Asmae Nakkabi, Hassane Faraj, and Anouar Alami. "Diethyl [(4-{(9H-carbazol-9-yl)methyl}-1H-1,2,3-triazol-1-yl)(benzamido)methyl]phosphonate." Molbank 2020, no. 4 (2020): M1167. http://dx.doi.org/10.3390/m1167.

Full text

Abstract:

The title compound, diethyl [(4-{(9H-carbazol-9-yl)methyl}-1H-1,2,3-triazol-1-yl)(benzamido)methyl]phosphonate, was synthesized with excellent yield and high regioselectivity through 1,3-dipolar cycloaddition reaction between the α-azido diethyl amino methylphosphonate and the heterocyclic alkyne, 9-(prop-2-yn-1-yl)-9H-carbazole. The cyclization reaction by “click chemistry” was carried out in a water/ethanol solvent mixture (50/50), in the presence of copper sulfate pentahydrate and catalytic sodium ascorbate. The characterization of the structure of the resulting 1,4-regioisomer was performe

APA, Harvard, Vancouver, ISO, and other styles

48

Wang, Kai, Haoran Chen, Tingting Niu, Shan Wang, Xiao Guo, and Hong Wang. "Dopant-Free Hole Transport Materials with a Long Alkyl Chain for Stable Perovskite Solar Cells." Nanomaterials 9, no. 7 (2019): 935. http://dx.doi.org/10.3390/nano9070935.

Full text

Abstract:

Hole transport materials are indispensable to high efficiency perovskite solar cells. Two new hole transporting materials (HTMs), named 4,4′-(9-nonyl-9H-carbazole-3,6-diyl)bis (N,N-bis(4-methoxyphenyl)aniline) (CZTPA-1) and 4,4′-(9-methyl-9H-carbazole-3,6-diyl)bis (N,N-bis(4-methoxyphenyl)aniline)(CZTPA-2), were developed by different alkyl substitution methods. The two compounds, containing a carbazole core and triphenylamine (TPA) groups with different lengths of the alkyl chain, were designed and synthesized through a two-step synthesis approach. The power conversion efficiency (PCE) was fo

APA, Harvard, Vancouver, ISO, and other styles

49

Guo, Huixia, Xiaohua Xi, Renxiang Yan та Xiaoquan Lu. "Theoretical study on the effect of different π-linker on the performance of sensitizer in carbazole-based dyes". Journal of Theoretical and Computational Chemistry 17, № 02 (2018): 1850019. http://dx.doi.org/10.1142/s0219633618500190.

Full text

Abstract:

Derived from diarylamine sensitizer diphenyl-(7-pyridin-4-yl-9H-carbazol-2-yl)-amine (N13), a series of novel D[Formula: see text]A carbazole-based organic dye sensitizers with different [Formula: see text]-linkers were designed for searching more effective sensitizers in dye-sensitized solar cells (DSSCs) design. Optimized geometries, electronic structure, and other parameters, which can evaluate the performance of DSSCs effectively and intuitively, were theoretically calculated by density functional theory (DFT) and time-dependent DFT methods at the M06/6-31G(d,p) level. The results indicate

APA, Harvard, Vancouver, ISO, and other styles

50

Głuszyńska, Agata, and Bernard Juskowiak. "Practical Microwave Synthesis of Carbazole Aldehydes for the Development of DNA-Binding Ligands." Molecules 24, no. 5 (2019): 965. http://dx.doi.org/10.3390/molecules24050965.

Full text

Abstract:

Microwave formylation of carbazole derivatives was investigated and 3-monoaldehydes were obtained in high yield. A potential DNA-binding ligand, 3-[(3-ethyl)-2-vinylbenzothiazolium]-9-N-ethyl carbazole iodide, was synthesized and characterized including spectral properties (UV-Vis absorption and fluorescence spectra). The binding selectivity and affinity of three carbazole ligands for double-stranded and G-quadruplex DNA structures were studied using a competitive dialysis method in sodium- and potassium-containing buffer solutions.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!