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Journal articles on the topic 'Pyrroles. Organic compounds Chemical reactions'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Shahvelayati, Ashraf S., Maryam Ghazvini, Khadijeh Yadollahzadeh та Akram S. Delbari. "A Phosphine-mediated Synthesis of 2,3,4,5-tetra-substituted Nhydroxypyrroles from α-oximino Ketones and Dialkyl Acetylenedicarboxylates Under Ionic Liquid Green-media". Combinatorial Chemistry & High Throughput Screening 21, № 1 (2018): 14–18. http://dx.doi.org/10.2174/1386207321666180124094536.

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Background: The development of multicomponent reactions (MCRs) in the presence of task-specific ionic liquids (ILs), used not only as environmentally benign reaction media, but also as catalysts, is a new approach that meet with the requirements of sustainable chemistry. In recent years, the use of ionic liquids as a green media for organic synthesis has become a chief study area. This is due to their unique properties such as non-volatility, non-flammability, chemical and thermal stability, immiscibility with both organic compounds and water and recyclability. Ionic liquids are used as enviro

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2

Giubellina, Nicola, Wim Aelterman, and Norbert De Kimpe. "Use of 3-halo-1-azaallylic anions in heterocyclic chemistry." Pure and Applied Chemistry 75, no. 10 (2003): 1433–42. http://dx.doi.org/10.1351/pac200375101433.

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The synthetic potential of lithio 3-halo-1-azaallylic anions as building blocks in organic chemistry and especially in heterocyclic chemistry will be highlighted by the synthesis of functionalized imines, obtained after reaction of 3-halo-1-azaallylic anions with het- eroatom-substituted electrophiles. Thus, the latter generated functionalized imines are suitable building blocks for the synthesis of a whole range of heterocycles and physiologically active compounds, including agrochemicals and pharmaceuticals. 3-Halo-1-azaallylic anions were used in the synthesis of N-alkyl-3,3-dichloroazetidi

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3

Sharma, Sachin, Gaurav Joshi, Sourav Kalra, Sandeep Singh, and Raj Kumar. "Synthetic Versus Enzymatic Pictet-Spengler Reaction: An Overview." Current Organic Synthesis 15, no. 7 (2018): 924–39. http://dx.doi.org/10.2174/1570179415666180613084014.

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Background: Pictet-Spengler reactions is an irreplaceable part of cyclization reaction leading to the formation of indispensable heterocyclic moieties including imidazole, benzoxazole, pyrrole, indole and others having immense biological and chemical significance. Researchers have explored this reaction using different types of catalysts and reactions conditions (including solvents, acids, etc.) to ensure the better selectivity, less reaction time and high product yields. A total of five Pictet-Spenglerases have been discovered from various sources including plants, animals, fungi, and microbe

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4

Farghaly, Thoraya A., Sami A. Al-Hussain, Zeinab A. Muhammad, Magda A. Abdallah, and Magdi E. A. Zaki. "Synthesis and Reactions of Perimidines and Their Fused Systems." Current Organic Chemistry 24, no. 15 (2020): 1669–716. http://dx.doi.org/10.2174/1385272824999200622113807.

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Perimidines are peri-naphtho-fused derivatives of pyrimidine. They are of particular interest as they are a rare example of an azine in which the lone pair of electrons of pyrrole-like nitrogen participates in the π-system of the molecule. Perimidine is an interesting class of heterocyclic compounds. Various synthetic analogs of perimidines have been prepared and evaluated for many pharmacological activities in different models with desired findings. They exhibit biological activities as antitumor, antiulcer, antimicrobial, and antifungal agents. This review is an attempt to organize the synth

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5

Konopski, Leszek, and Anna Kiełczewska. "Application of 2-Trichloromethylbenzimidazole in Analytical Chemistry: A Highly Selective Chromogenic Reagent for Thin-Layer Chromatography and Some Other Analytical Uses." Journal of Analytical Methods in Chemistry 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/650150.

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2-Trichloromethylbenzimidazole (TCMB) was used as a chromogenic reagent in organic or inorganic analysis, mainly in thin-layer chromatography (TLC). In reactions of TCMB with some heteroaromatic nitrogen containing compounds, such as azines, azoles and benzazoles, a formation of high colored products occurred. For azines, the chromogenic reaction was highly regioselective, since the both adjacentα-positionsversusthe nitrogen atom(s) must not be substituted. A TLC method of detection was developed. Thirty azines, azoles, and benzazoles were detected at the detection limit 10 ng to 1 μg. This me

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6

Michoud, V., R. F. Hansen, N. Locoge, P. S. Stevens, and S. Dusanter. "Detailed characterizations of a Comparative Reactivity Method (CRM) instrument: experiments vs. modelling." Atmospheric Measurement Techniques Discussions 8, no. 4 (2015): 3803–50. http://dx.doi.org/10.5194/amtd-8-3803-2015.

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Abstract. The Hydroxyl radical (OH) is an important oxidant in the daytime troposphere that controls the lifetime of most trace gases, whose oxidation leads to the formation of harmful secondary pollutants such as ozone (O3) and Secondary Organic Aerosols (SOA). In spite of the importance of OH, uncertainties remain concerning its atmospheric budget and integrated measurements of the total sink of OH can help reducing these uncertainties. In this context, several methods have been developed to measure the first-order loss rate of ambient OH, called total OH reactivity. Among these techniques,

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7

Leonardi, Marco, Mercedes Villacampa, and J. Carlos Menéndez. "High-speed vibration-milling-promoted synthesis of symmetrical frameworks containing two or three pyrrole units." Beilstein Journal of Organic Chemistry 13 (September 15, 2017): 1957–62. http://dx.doi.org/10.3762/bjoc.13.190.

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The pseudo-five-component reaction between β-dicarbonyl compounds (2 molecules), diamines and α-iodoketones (2 molecules), prepared in situ from aryl ketones, was performed efficiently under mechanochemical conditions involving high-speed vibration milling with a single zirconium oxide ball. This reaction afforded symmetrical frameworks containing two pyrrole or fused pyrrole units joined by a spacer, which are of interest in the exploration of chemical space for drug discovery purposes. The method was also extended to the synthesis of one compound containing three identical pyrrole fragments

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8

Li, Xuan, Yixiang Gao, Chenpeng Zuo, et al. "The Gas-Phase Formation Mechanism of Dibenzofuran (DBF), Dibenzothiophene (DBT), and Carbazole (CA) from Benzofuran (BF), Benzothiophene (BT), and Indole (IN) with Cyclopentadienyl Radical." International Journal of Molecular Sciences 20, no. 21 (2019): 5420. http://dx.doi.org/10.3390/ijms20215420.

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Benzofuran (BF), benzothiophene (BT), indole (IN), dibenzofuran (DBF), dibenzothiophene (DBT), and carbazole (CA) are typical heterocyclic aromatic compounds (NSO-HETs), which can coexist with polycyclic aromatic hydrocarbons (PAHs) in combustion and pyrolysis conditions. In this work, quantum chemical calculations were carried out to investigate the formation of DBF, DBT, and CA from the reactions of BF, BT, and IN with a cyclopentadienyl radical (CPDyl) by using the hybrid density functional theory (DFT) at the MPWB1K/6-311+G(3df,2p)//MPWB1K/6-31+G(d,p) level. The rate constants of crucial e

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9

Chaudhary, Ankita. "Arylglyoxals as Versatile Synthons for Heterocycles Through Multi-Component Reactions." Current Organic Chemistry 23, no. 18 (2019): 1945–83. http://dx.doi.org/10.2174/1385272823666191019110010.

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Arylglyoxals are important synthons that have been used in the construction of a diverse spectrum of compounds. The use of multicomponent approaches in organic synthesis due to its environmentally friendly nature is a step forward towards sustainability. This review will offer the reader insightful perspectives on the use of arylglyoxals for the synthesis of various heterocyclic compounds like pyrroles, pyrazoles, furans, imidazoles, indoles, oxazoles, pyridines, quinazolines, pyrans, etc using multicomponent approach.

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10

Soma, Y., and M. Soma. "Chemical reactions of organic compounds on clay surfaces." Environmental Health Perspectives 83 (November 1989): 205–14. http://dx.doi.org/10.1289/ehp.8983205.

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11

Win-Shwe, Tin-Tin, Hidekazu Fujimaki, Keiichi Arashidani, and Naoki Kunugita. "Indoor Volatile Organic Compounds and Chemical Sensitivity Reactions." Clinical and Developmental Immunology 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/623812.

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Studies of unexplained symptoms observed in chemically sensitive subjects have increased the awareness of the relationship between neurological and immunological diseases due to exposure to volatile organic compounds (VOCs). However, there is no direct evidence that links exposure to low doses of VOCs and neurological and immunological dysfunction. We review animal model data to clarify the role of VOCs in neuroimmune interactions and discuss our recent studies that show a relationship between chronic exposure of C3H mice to low levels of formaldehyde and the induction of neural and immune dys

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12

Barata-Vallejo, Sebastián, Sergio M. Bonesi, and Al Postigo. "Photocatalytic fluoroalkylation reactions of organic compounds." Organic & Biomolecular Chemistry 13, no. 46 (2015): 11153–83. http://dx.doi.org/10.1039/c5ob01486g.

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Photocatalytic methods for fluoroalkyl-radical generation provide more convenient alternatives to the classical perfluoroalkyl-radical (R<sub>f</sub>) production through chemical initiators, such as azo or peroxide compounds or the employment of transition metals through a thermal electron transfer (ET) initiation process.

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13

Li, Jin-Heng, De-Lie An, and Jing-Hao Qin. "Recent Advances in Cycloaddition Reactions with Alkynes to Construct Heterocycles." Synthesis 52, no. 24 (2020): 3818–36. http://dx.doi.org/10.1055/s-0040-1707355.

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Heterocyclic compounds, especially N-heterocycles and O-heterocycles, are prominent structural motifs present in numerous natural products and medically and/or economically important compounds. This review aims to describe the development of transition-metal-catalyzed cycloaddition reactions of functionalized m-atom partners with alkynes to access a wide range of five-, six-, and seven-membered heterocycles, that is functionalized N-heterocycles and O-heterocycles such as azepines, isoquinolines, isocoumarins, spiroheterocycles, indoles, furans, and pyrroles, in a selectively controlled manner

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14

Krief, Alain, Cathy Delmotte, and Catherine Colaux-Castillo. "Reactions involving inorganic compounds." Pure and Applied Chemistry 72, no. 9 (2000): 1709–13. http://dx.doi.org/10.1351/pac200072091709.

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Selenium chemistry became, over the last 30 years, particularly useful for synthetic organic chemistry [1]. Inorganic as well as organic selenium compounds allow transformation which otherwise cannot be done or require much more drastic conditions to proceed. We have over the last 25 years explored the reactivity of elemental selenium as well as its inorganic and organic derivatives. We report here our recent finding concerning (i) organic diselenols and -diselenolates and (ii) the role of selenoxides in the enantioselective dihydroxylation of C,C double bonds using catalytic amounts of osmium

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15

Seo, Jia, Che-Wei Chen, Shih-Ching Chuang, et al. "Palladium-Catalyzed C–H Benzannulation of Functionalized Furans and Pyrroles with Alkynes." Synthesis 53, no. 17 (2021): 3001–10. http://dx.doi.org/10.1055/a-1502-3641.

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AbstractA benzannulation strategy involving activation of two C–H bonds of five-membered heteroarenes was developed. Readily available furans and pyrroles stabilized by synthetically useful electron-withdrawing groups underwent Pd-catalyzed 1:2 annulation reactions with diaryl alkynes. A variety of functional groups, including ester, amide, ketone, aldehyde, and nitrile, on the heterocyclic cores were tolerated in the Pd-catalyzed oxidative reactions. In these reactions, the combination of 2,2-dimethylbutyric acid and its conjugate base facilitated metalation at the heteroaromatic rings and re

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16

Hertkorn, N., M. Harir, B. P. Koch, B. Michalke, P. Grill, and P. Schmitt-Kopplin. "High field NMR spectroscopy and FTICR mass spectrometry: powerful discovery tools for the molecular level characterization of marine dissolved organic matter from the South Atlantic Ocean." Biogeosciences Discussions 9, no. 1 (2012): 745–833. http://dx.doi.org/10.5194/bgd-9-745-2012.

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Abstract. Non target high resolution organic structural spectroscopy of marine dissolved organic matter (DOM) isolated on 27 November 2008 by means of solid phase extraction (SPE) from four different depths in the South Atlantic Ocean off the Angola coast (3.1° E; −17.7° S; Angola basin) provided molecular level information of complex unknowns with unprecedented coverage and resolution. The sampling was intended to represent major characteristic oceanic regimes of general significance: 5 m (FISH; near surface photic zone), 48 m (FMAX; fluorescence maximum), 200 m (upper mesopelagic zone) and 5

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17

Huang, Wenbo, Kaimei Wang, Ping Liu, Minghao Li, Shaoyong Ke та Yanlong Gu. "Three-component reactions of aromatic amines, 1,3-dicarbonyl compounds, and α-bromoacetaldehyde acetal to access N-(hetero)aryl-4,5-unsubstituted pyrroles". Beilstein Journal of Organic Chemistry 16 (30 листопада 2020): 2920–28. http://dx.doi.org/10.3762/bjoc.16.241.

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N-(Hetero)aryl-4,5-unsubstituted pyrroles were synthesized from (hetero)arylamines, 1,3-dicarbonyl compounds, and α-bromoacetaldehyde acetal by using aluminum(III) chloride as a Lewis acid catalyst through [1 + 2 + 2] annulation. This new versatile methodology provides a wide scope for the synthesis of different functional N-(hetero)aryl-4,5-unsubstituted pyrrole scaffolds, which can be further derived to access multisubstituted pyrrole-3-carboxamides. In the presence of 1.2 equiv of KI, a polysubstituted pyrazolo[3,4-b]pyridine derivative was also successfully synthesized.

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18

Chen, C. H., and M. P. McCann. "Two-Photon-Induced Chemical Reactions in Liquids." Applied Spectroscopy 44, no. 1 (1990): 115–17. http://dx.doi.org/10.1366/0003702904085822.

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The two-photon absorption process was used to obtain the first observation of particle precipitation in liquids between halogen-containing organic compounds and silver-containing inorganic compounds. Photo-detachment of an electron from negative ions was found to be one important mechanism that led to these chemical reactions. Similar processes may lead to many new multiphoton-induced chemical reactions between organic and inorganic compounds.

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19

Wei, Ning, Donghai Xu, Botian Hao, Shuwei Guo, Yang Guo, and Shuzhong Wang. "Chemical reactions of organic compounds in supercritical water gasification and oxidation." Water Research 190 (February 2021): 116634. http://dx.doi.org/10.1016/j.watres.2020.116634.

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20

Atkinson, R. "Product studies of gas-phase reactions of organic compounds." Pure and Applied Chemistry 70, no. 7 (1998): 1335–43. http://dx.doi.org/10.1351/pac199870071335.

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21

Leinweber, P., G. Jandl, K. U. Eckhardt, et al. "Nitrogen speciation in fine and coarse clay fractions of a Cryoboroll - new evidence from pyrolysis-mass spectrometry and nitrogen K-edge XANES." Canadian Journal of Soil Science 90, no. 2 (2010): 309–18. http://dx.doi.org/10.4141/cjss09063.

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Soil clay fractions are usually enriched in nitrogen (N), but the chemical identity of this N is largely unknown. Therefore, we investigated organic N in fine and coarse clay of a clay-rich Cryoboroll by Curie-point pyrolysis-gas chromatography/mass spectrometry (Cp Py-GC/MS), Pyrolysis-field ionization mass spectroscopy (Py-FIMS) and synchrotron-based nitrogen K-edge X-ray absorption near edge structure (N-XANES) spectroscopy. The Cp Py-GC-MS revealed 30 structurally different N-containing compounds, such as substituted pyridines, pyrroles; pyrazines, pyrazoles, imidazoles, quinolines, side-c

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22

Tinnacher, Ruth M., and Bruce D. Honeyman. "Modeling the Chemical Conversion of Organic Compounds in Sodium Borohydride Reduction Reactions." Organic Process Research & Development 12, no. 3 (2008): 456–63. http://dx.doi.org/10.1021/op700267q.

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23

Ranu, Brindaban C., Kalicharan Chattopadhyay, Laksmikanta Adak, et al. "Metal nanoparticles as efficient catalysts for organic reactions." Pure and Applied Chemistry 81, no. 12 (2009): 2337–54. http://dx.doi.org/10.1351/pac-con-08-11-19.

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Pd(0) nanoparticles have been demonstrated to be very efficient catalysts for C–C bond-forming reactions. These include coupling of vicinal-diiodoalkenes and acrylic esters and nitriles leading to the stereoselective synthesis of 2-alkene-4-yn-esters and nitriles, allylation of active methylene compounds by allyl acetate, and Hiyama cross-coupling of aryliodides with arylsilanes. Cu(0) nanoparticles catalyze aryl-sulfur bond formation, accomplishing the synthesis of functionalized aryl sulfides and aryl- and vinyl dithiocarbamates. Cu nanoparticles have also been used for the chemoselective re

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24

Ojima, Iwao. "New cyclization reactions in organic syntheses." Pure and Applied Chemistry 74, no. 1 (2002): 159–66. http://dx.doi.org/10.1351/pac200274010159.

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Recent development in the transition metal-catalyzed cyclization reactions for organic syntheses in the author's laboratories is summarized, which includes (i) novel silylcarbocyclizations (SiCaCs) and carbonylative carbotricyclizations, (ii) intramolecular silylformylations and desymmerization of siloxydiynes by sequential double silylformylation, (iii) efficient total synthesis of (+)-prosopinine, (iv) enantioselective desymmetrization of aminodienes, and (iv) new and efficient routes to 1-azabicyclo[x.y.0]alkane amino acids. All these processes are catalyzed by Rh or RhCo complexes, and us

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25

Pereira dos Santos, Valmore Henrique, Dorval Moreira Coelho Neto, Valdemar Lacerda Júnior, Warley de Souza Borges, and Eliane de Oliveira Silva. "Fungal Biotransformation: An Efficient Approach for Stereoselective Chemical Reactions." Current Organic Chemistry 24, no. 24 (2020): 2902–53. http://dx.doi.org/10.2174/1385272824999201111203506.

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Abstract:: There is great interest in developing chemical technologies to achieve regioselective and stereoselective reactions since only one enantiomer is required for producing the chiral leads for drug development. These selective reactions are provided by traditional chemical synthetic methods, even under expensive catalysts and long reaction times. Filamentous fungi are efficient biocatalysts capable of catalyzing a wide variety of reactions with significant contributions to the development of clean and selective processes. Although some enzymes have already been employed in isolated form

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26

Musaev, Yurii I., Eleonora B. Musaeva, Svetlana Yu Khashirova, Marina O. Sanakoeva, and Artur E. Baykaziev. "Synthesis of Aromatic Diketoximes and their Complexes with Nickel Salts." Key Engineering Materials 869 (October 2020): 571–76. http://dx.doi.org/10.4028/www.scientific.net/kem.869.571.

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The diketoximes of 4,4'-diacetyldiphenyl oxide and 4,4'-diacetyldiphenyl sulfide were synthesized, the possibility of their use for the synthesis of simple and complex polyesters and polypyrroles, as well as the ability to complex with nickel salts. Organic chemistry used oximes in the 19th century, afterward, as an analytical reagent in the 20th century. Currently, oximes are superior to carbonyl compounds and alcohols in the variety of reactions and the widespread use in synthetic chemistry. Oximes easily turn into other classes of organic compounds – amines, cyano and nitro compounds, carbo

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27

Thammarat, Poowadol, Chadin Kulsing, Kanet Wongravee, Natchanun Leepipatpiboon, and Thumnoon Nhujak. "Identification of Volatile Compounds and Selection of Discriminant Markers for Elephant Dung Coffee Using Static Headspace Gas Chromatography—Mass Spectrometry and Chemometrics." Molecules 23, no. 8 (2018): 1910. http://dx.doi.org/10.3390/molecules23081910.

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Elephant dung coffee (Black Ivory Coffee) is a unique Thai coffee produced from Arabica coffee cherries consumed by Asian elephants and collected from their feces. In this work, elephant dung coffee and controls were analyzed using static headspace gas chromatography hyphenated with mass spectrometry (SHS GC-MS), and chemometric approaches were applied for multivariate analysis and the selection of marker compounds that are characteristic of the coffee. Seventy-eight volatile compounds belonging to 13 chemical classes were tentatively identified, including six alcohols, five aldehydes, one car

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28

Fraga-Dubreuil, Joan, and Martyn Poliakoff. "Organic reactions in high-temperature and supercritical water." Pure and Applied Chemistry 78, no. 11 (2006): 1971–82. http://dx.doi.org/10.1351/pac200678111971.

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This paper describes various examples of organic reactions carried out in high-temperature water (HTW) that have been performed at the University of Nottingham using either batch-type reactors or continuous-flow systems. Homogeneously and heterogeneously catalyzed partial oxidations of aromatic compounds, in situ hydrogenations, heterocyclic reactions, hydrolysis (HYD), saponification (SAP), and deuteration reactions are presented.

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29

Facchini, M. C., S. Fuzzi, J. A. Lind, et al. "Phase-partitioning and chemical reactions of low molecular weight organic compounds in fog." Tellus B: Chemical and Physical Meteorology 44, no. 5 (1992): 533–44. http://dx.doi.org/10.3402/tellusb.v44i5.15566.

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30

FACCHINI, M. C., S. FUZZI, J. A. LIND, et al. "Phase-partitioning and chemical reactions of low molecular weight organic compounds in fog." Tellus B 44, no. 5 (1992): 533–44. http://dx.doi.org/10.1034/j.1600-0889.1992.t01-3-00007.x.

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31

Wang, Jianbo. "When diazo compounds meet with organoboron compounds." Pure and Applied Chemistry 90, no. 4 (2018): 617–23. http://dx.doi.org/10.1515/pac-2017-0713.

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AbstractTransition-metal free reactions of diazo compounds with organoboron compounds provide some unique approaches for the formation of C–C, C–B and C–Si bonds. WithN-tosylhydrazones as the precursors for non-stabilized diazo compound, this type of reaction becomes practically useful in organic synthesis. Transition-metal-free synthetic methodologies for borylation,gem-diborylation,gem-silylborylation arylation, 2,2,2-trifluoroethylation andgem-difluorovinylation have been successfully developed.

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Murahashi, Shun-Ichi, Hikaru Takaya, and Takeshi Naota. "Ruthenium catalysis in organic synthesis." Pure and Applied Chemistry 74, no. 1 (2002): 19–24. http://dx.doi.org/10.1351/pac200274010019.

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Ruthenium, rhodium, iridium, and rhenium hydride complexes are highly useful redox Lewis acid and base catalysts. Various substrates bearing hetero atoms are activated by these catalysts and undergo reactions with either nucleophiles or electrophiles under neutral conditions. These types of catalytic reactions are described together with their application to the preparation of various biologically active compounds.

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Karahadian, C., and R. C. Lindsay. "Action of Tocopherol-Type Compounds in Directing Reactions Forming Flavor Compounds in Autoxidizing Fish Oils." Journal of the American Oil Chemists' Society 66, no. 9 (1989): 1302–8. http://dx.doi.org/10.1007/bf03022750.

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34

Tung, Chen-Ho, Li-Zhu Wu, Li-Ping Zhang, et al. "Microreactor-controlled selectivity in organic photochemical reactions." Pure and Applied Chemistry 72, no. 12 (2000): 2289–98. http://dx.doi.org/10.1351/pac200072122289.

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Molecular-sieve zeolites, Nafion membranes, low-density polyethylene films, and mixed surfactant vesicles have been used as microreactors to carry out organic photochemical reactions. The photo-cycloadditions of diaryl compounds with long flexible chains included in NaY zeolite or low-density polyethylene films yield intramolecular photocyclomers to the exclusion of intermolecular products. The photosensitized oxidation of alkenes included in pentasil zeolites or Nafion membranes or vesicles can be directed selectively toward either the singlet oxygen-mediated or the superoxide radical anion-m

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35

Tang, Qinqin, Xianjie Yin, Ratnakar Reddy Kuchukulla, and Qingle Zeng. "Recent Advances in Multicomponent Reactions with Organic and Inorganic Sulfur Compounds." Chemical Record 21, no. 4 (2021): 893–905. http://dx.doi.org/10.1002/tcr.202100026.

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36

Briehl, Horst, and Jörg Butenuth. "Application of DTA/DSC and TG for studying chemical reactions of monomeric organic compounds." Thermochimica Acta 167, no. 2 (1990): 249–92. http://dx.doi.org/10.1016/0040-6031(90)80482-e.

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37

Mekheimer, Ramadan A., Mariam A. Al-Sheikh, Hanadi Y. Medrasi, Ghayah A. Bahatheg, and Kamal U. Sadek. "Chloroquinoline-3-carbonitriles: Synthesis and Reactions." Current Organic Chemistry 23, no. 7 (2019): 823–51. http://dx.doi.org/10.2174/1385272823666190516120946.

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We herein describe the first review which aims to focus soberly the various synthetic methods and chemical reactions of chloroquinoline-3-carbonitrile derivatives. The reactions are subdivided into groups that cover reactions of chloro substituent at 2 or 4 and 2,4 positions, as well as cyano substituent at 3 position and reactions which involve both groups. Most types of reactions have been successfully applied and used in the production of biologically active compounds.

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38

Suerbaev, Kh A. "Carbon Dioxide as a Source of Carbon in Chemical Synthesis." Eurasian Chemico-Technological Journal 12, no. 2 (2010): 105. http://dx.doi.org/10.18321/ectj32.

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Modern achievements in the chemistry of carbon dioxide have been considered. When utilizing carbon dioxide in chemical synthesis, two groups of reactions: reactions of carboxylation (carboxyamidation) of organic compounds with carbon dioxide and reactions of carbon dioxide reduction – are supposed to be the most prospective.

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39

Philkhana, Satish Chandra, Fatimat O. Badmus, Isaac C. Dos Reis, and Rendy Kartika. "Recent Advancements in Pyrrole Synthesis." Synthesis 53, no. 09 (2021): 1531–55. http://dx.doi.org/10.1055/s-0040-1706713.

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AbstractThis review article features selected examples on the synthesis of functionalized pyrroles that were reported between 2014 and 2019. Pyrrole is an important nitrogen-containing aromatic heterocycle that can be found in numerous compounds of biological and material significance. Given its vast importance, pyrrole continues to be an attractive target for the development of new synthetic reactions. The contents of this article are organized by the starting materials, which can be broadly classified into four different types: substrates bearing π-systems, substrates bearing carbonyl and ot

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Monier, Mohamed, Doaa Abdel-Latif, Ahmed El-Mekabaty, Başak D. Mert, and Khaled M. Elattar. "Advances in the Chemistry of 6-6 Bicyclic Systems: Chemistry of Pyrido[3,4- d]pyrimidines." Current Organic Synthesis 16, no. 6 (2019): 812–54. http://dx.doi.org/10.2174/1570179416666190704113647.

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The aim of this work is to discuss the chemistry of pyrido[3,4-d]pyrimidines as one of the most important heterocyclic compounds with remarkable synthetic, biological and medical applications. In this overview, the chemistry of heterocyclic compounds incorporated the pyrido[3,4-d]pyrimidine scaffold as demonstrated by chemical reactions and different preparation processes. The anticipated compounds were synthesized from pyridine or pyrimidine compounds and a description of the reactivity of substituents attached to ring carbon and nitrogen atoms is discussed. On the other hand, the synthesis a

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Luty, Tadeusz, and Herve Cailleau. "Elecron Induced Transformations in Organic Mixed-Stack Compounds as Models for Solid Stats Chemical Reactions." Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics 156, no. 1 (1988): 139–48. http://dx.doi.org/10.1080/00268948808070563.

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El-Wakil, A. M., A. B. Farag, and M. S. El-Shahawi. "Iodometric microdetermination of thallium in aqueous media and in organic compounds by chemical amplification reactions." Fresenius' Journal of Analytical Chemistry 337, no. 8 (1990): 886. http://dx.doi.org/10.1007/bf00323168.

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Das, Suven. "Recent applications of ninhydrin in multicomponent reactions." RSC Advances 10, no. 32 (2020): 18875–906. http://dx.doi.org/10.1039/d0ra02930k.

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This article aims to review recent multicomponent reactions of ninhydrin towards diverse organic scaffolds, such as indeno-fused heterocycles, spiro-indeno heterocycles, quinoxalines, propellanes, cage-like compounds, and dispiro heterocycles.

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Yamada, Masaaki, Kinji Taki, and Mitsuo Shibutani. "Crosslinking Reactions between Isocyanate Compounds and Acetoacetylated PVA in Water and in Organic Solvent Systems." Mokuzai Gakkaishi 54, no. 4 (2008): 191–98. http://dx.doi.org/10.2488/jwrs.54.191.

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Oss, Giulia, and Thanh Vinh Nguyen. "Iodonium-Catalyzed Carbonyl–Olefin Metathesis Reactions." Synlett 30, no. 17 (2019): 1966–70. http://dx.doi.org/10.1055/s-0039-1690297.

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The carbonyl–olefin metathesis reaction has become increasingly important in organic synthesis due to its versatility in functional group interconversion chemistry. Recent developments in the field have identified a number of transition-metal and organic Lewis acids as effective catalysts for this reaction. Herein, we report the use of simple organic compounds such as N-iodosuccinimide or iodine monochloride to catalyze the carbonyl–olefin metathesis process under mild reaction conditions. This work broadens the scope of this chemical transformation to include iodonium sources as simple and pr

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Amii, Hideki, Aiichiro Nagaki, and Jun-ichi Yoshida. "Flow microreactor synthesis in organo-fluorine chemistry." Beilstein Journal of Organic Chemistry 9 (December 5, 2013): 2793–802. http://dx.doi.org/10.3762/bjoc.9.314.

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Organo-fluorine compounds are the substances of considerable interest in various industrial fields due to their unique physical and chemical properties. Despite increased demand in wide fields of science, synthesis of fluoro-organic compounds is still often faced with problems such as the difficulties in handling of fluorinating reagents and in controlling of chemical reactions. Recently, flow microreactor synthesis has emerged as a new methodology for producing chemical substances with high efficiency. This review outlines the successful examples of synthesis and reactions of fluorine-contain

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Kemskiy, Sergiy, Alina Grozav, Sergiy Sujkov, Oleksandr Yurchenko та Mykhailo Vovk. "Pd/C-CATALISED HYDROGENIZATION OF METHYL PYRROLE-3-CARBOXYLATES IN THE DIASTEREOSELECTIVE SYNTHESIS OF α-SUBSTITUTED β-PROLINES". Ukrainian Chemistry Journal 86, № 2 (2020): 100–110. http://dx.doi.org/10.33609/0041-6045.86.2.2020.100-110.

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The analysis of synthetic and biological importance of α-substituted β-prolines was conducted. Methods of synthesis of β-prolines and their esters, based on both intra- and intermolecular reactions of formation of functionalized pyrrolidinic cycle, as well as catalytic reduction of corresponding 2,3-substituted pyrroles and their dihydro derivatives, were systematized. The necessity of the hydrogenation process improvement of 2,3-di-substituted pyrroles using cheap catalysts was justified. The approach to α-substituted β-prolines (2-substituted pyrrolidine-3-carboxylic acids) was pro-posed, th

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Tahara, Seiichi, Tomomichi Ichikawa, Go Kajiwara, and Yoshiyuki Sugahara. "Reactivity of the Ruddlesden−Popper Phase H2La2Ti3O10with Organic Compounds: Intercalation and Grafting Reactions." Chemistry of Materials 19, no. 9 (2007): 2352–58. http://dx.doi.org/10.1021/cm0623662.

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Portilla Zuniga, Omar Miguel, Angel Gabriel Sathicq, Jose Jobanny Martinez Zambrano, and Gustavo Pablo Romanelli. "Green Synthesis of Pyrrole Derivatives." Current Organic Synthesis 14, no. 6 (2017): 865–82. http://dx.doi.org/10.2174/1570179414666161206124318.

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Background: Pyrroles are organic cyclic compounds with an extensive and fascinating chemistry. These compounds have a wide structural variety and they are an important basis in technological development as they can be used as drugs, dyes, catalysts, pesticides, etc. Therefore, the production of these heterocyclic compounds by efficient clean methodologies is a great achievement in contemporary chemistry. In this paper, we show recent green procedures in the synthesis of pyrrole derivatives such as Hantzsch, Knorr and Paal- Knorr syntheses, as well as new eco-friendly synthetic procedures with

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Jenkin, Michael E., Richard Valorso, Bernard Aumont, Andrew R. Rickard, and Timothy J. Wallington. "Estimation of rate coefficients and branching ratios for gas-phase reactions of OH with aliphatic organic compounds for use in automated mechanism construction." Atmospheric Chemistry and Physics 18, no. 13 (2018): 9297–328. http://dx.doi.org/10.5194/acp-18-9297-2018.

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Abstract. Reaction with the hydroxyl (OH) radical is the dominant removal process for volatile organic compounds (VOCs) in the atmosphere. Rate coefficients for reactions of OH with VOCs are therefore essential parameters for chemical mechanisms used in chemistry transport models, and are required more generally for impact assessments involving the estimation of atmospheric lifetimes or oxidation rates for VOCs. Updated and extended structure–activity relationship (SAR) methods are presented for the reactions of OH with aliphatic organic compounds, with the reactions of aromatic organic compou

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