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Journal articles on the topic 'Substituted [3'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Shailendra, Tiwari, and Nizamuddin. "Synthesis and fungicidal activities of some 2-substituted arylamino-5-(2' -furyl)- 1,3,4-thiadiazolo[3,2-c]thiazoles and 5-substituted aryl-2-substituted arylamino-1 ,3 ,4-thiadiazolo [3 ,2-c ]thiazoles." Journal of Indian Chemical Society Vol. 90, May 2013 (2013): 679–83. https://doi.org/10.5281/zenodo.5772308.

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Department of Chemistry, University of Allahabad, Allahabad-211 002, Uttar Pradesh, India <em>E-mail</em> : drshailendratiwariau@gmail. com Department of Chemistry, DDU Gorakhpur University, Gorakhpur-273 009, Uttar Pradesh, India <em>E-mail</em> : prnukhan@gmail.com <em>Manuscript received 13 December 2011, revised 14 May 2012, accepted 11 July 2012</em> Several 2-substituted arylamino-5-(2<em>'</em>-furyl)-1,3,4-thiadiazolo[3,2-c]thiazoles have been synthesised by cyclisation of 3-substituted aryl thiocarbanilido-2-(2<em>'</em> -furyl)thiazolidin-4-ones with conc. H<sub>2</sub>SO<sub

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2

Fisher, T. H., Y. Jin, and T. P. Schultz. "Fungicidal Activity of 3'-Substituted-3-Stilbenols." Holzforschung 55, no. 6 (2001): 568–72. http://dx.doi.org/10.1515/hf.2001.092.

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Summary Twenty 3′-substituted-3-stilbenols were synthesized and tested for fungicidal activity (agar plate IC50 values) against two brown-rot fungi rot Gloeophyllum trabeum and Postia placenta and one white-rot fungus Trametes versicolor. Compounds synthesized were eight trans-3-X-3′-stilbenols (X = OMe, Me, Cl, OH, OPr, OBu, OOct, and O-p-Tol), three cis-3-X-3′-stilbenols (X = OMe, Me, Cl), three 3-hydroxy-α-(3-X-phenyl)cinnamic acids (X = OMe, Me, Cl), and six multisubstituted-3′-substituted-3-stilbenols (3′,4-diOMe, 3′-Me-4-OMe, 3′-Cl-4-OMe, 3′-OH-4-OMe, 3′-Cl-4-OMe-4′-OH, and 3′-Cl-4′-OH).

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3

Fayet, Catherine, and Jacques Gelas. "Synthesis of 3-substituted furans from 3-C-substituted hexuloses." Carbohydrate Research 155 (November 1986): 99–106. http://dx.doi.org/10.1016/s0008-6215(00)90136-8.

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4

J Khairnar, Bhikan, Rahul S. Salunke, Premchand B. Patil, et al. "Synthesis and Antimicrobial Activity of Some New 1, 4-Benzothiazine Containing Thiosemicarbazides and 1, 3, 4-Oxadiazole Derivatives." E-Journal of Chemistry 9, no. 1 (2012): 318–22. http://dx.doi.org/10.1155/2012/902784.

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A series of novel 3- methyl-7-substituted-4H,4-benzothiazine-2-carbohydrazide (3a-e) and corresponding thiosemicarbazides (4-a-q); 2-[3-methyl-7-substituted- 4H-1, 4-benzothiazine-2-yl]-N-(aryl) hydrazine carbothiamide have been synthesized. The thiosemicarbazide when cyclized with iodine via intramolecular cyclisation gave benzothiazonyl oxadiazoles (5-a-q); 5-(3-methyl -7-substitued-4H- 1,4-benzothiazin-2-yl)-N—aryl- 1,3,4- oxadiazol -2-amine and the compounds were tested for antibacterial and antifungal activities against different microorganisms.

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5

McNamara, Dennis J., P. Dan Cook, Lois B. Allen, Mary Jo Kehoe, Carolyn S. Holland, and Annette G. Teepe. "Synthesis, antitumor activity, and antiviral activity of 3-substituted 3-deazacytidines and 3-substituted 3-deazauridines." Journal of Medicinal Chemistry 33, no. 7 (1990): 2006–11. http://dx.doi.org/10.1021/jm00169a032.

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6

Sinur, A., L. Golič, and B. Stanovnik. "Three substituted 3-aminopropenoates." Acta Crystallographica Section C Crystal Structure Communications 50, no. 11 (1994): 1842–46. http://dx.doi.org/10.1107/s0108270193013423.

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7

Kao, Bo-Chan, Haresh Doshi, Hector Reyes-Rivera, Donald D. Titus, Mali Yin, and David R. Dalton. "3-Substituted 2-pyridinecarbaldoximes." Journal of Heterocyclic Chemistry 28, no. 5 (1991): 1315–24. http://dx.doi.org/10.1002/jhet.5570280525.

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8

Jha, Amitabh, Ting-Yi Chou, Zainab ALJaroudi, Bobby D. Ellis, and T. Stanley Cameron. "Aza-Diels–Alder reaction between N-aryl-1-oxo-1H-isoindolium ions and tert-enamides: Steric effects on reaction outcome." Beilstein Journal of Organic Chemistry 10 (April 14, 2014): 848–57. http://dx.doi.org/10.3762/bjoc.10.81.

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The synthesis of 5-substituted 6,6a-dihydroisoindolo[2,1-a]quinolin-11(5H)-ones via [4 + 2] imino-Diels–Alder cyclization from N-aryl-3-hydroxyisoindolinones and N-vinyl lactams under Lewis acid-catalysed anhydrous conditions is reported. Reactions of N-(2-substituted-aryl)-3-hydroxyisoindolinones with N-vinylpyrrolidone under identical conditions resulted in the formation of 2-(2-substitued-aryl)-3-(2-(2-oxopyrrolidin-1-yl)vinyl)isoindolin-1-one analogues indicating steric hinderance as the cause of deviation. The probable mechanism of the reaction based on the results from X-ray crystallogra

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9

Bhat, S. S., S. N. MamleDesai, V. Narvekar, S. G. Shingade, P. K. Dighe, and B. S. Biradar. "DESIGN, SYNTHESIS AND EVALUATION OF 6-SUBSTITUTED-4-HYDROXY-1-(2- SUBSTITUTEDACETYL)-3-NITROQUINOLIN-2(1H)-ONES FOR ANTICANCER ACTIVITY." INDIAN DRUGS 56, no. 12 (2019): 20–27. http://dx.doi.org/10.53879/id.56.12.11967.

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The present work deals with the synthesis of a series of 6-substituted-4-hydroxy-1-(2-substitued alicyclicaminoacetyl)-3-nitroquinolin-2(1H)-one {IVa-d (1-3)} derivatives and evaluation of their in vitro anticancer activity. Docking study was carried out using EGFR-tyrosine kinase binding site (PDB ID: 1m17) and revealed encouraging results. The sequence of reactions consists of the initial synthesis of 6-substituted 4-hydroxyquinolin-2(1H)-ones (Ia-d), which were further subjected to nitration reaction to give 6- substituted-4-hydroxy-3-nitroquinolin-2(1H)-one (IIa-d). Condensation of compoun

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10

P., L. Harale, E. Shelke M., Tayade D.T., and R. Kurhe A. "Synthesis of 3-(substitutedthiocarbamide)-aniline derivatives from di-tert-butyl dicarbonate (BoC) protected 3-chloroaniline." GSC Biological and Pharmaceutical Sciences 28, no. 3 (2024): 046–52. https://doi.org/10.5281/zenodo.14709141.

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Synthesis of substituted thiocarbamide derivatives is important in the fields of medicinal, agricultural, chemical, and pharmaceutical. Thiocarbamides are commonly utilized as starting materials for several organic synthetic processes and have been studied in search for easy and effective methods of chemical synthesis. In the existing research work, 3-chloroaniline was protected by a di-tert-butyl dicarbonate (BoC) protecting agent. Substituted thiocarbamide derivatives were synthesized using condensation of various substituted thioureas with amino group-protected 3-chloroaniline. The structur

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11

Zainab, K. Al-Khazragie, J. M. Al-Fartosy Adnan, and K. Al-Salami Bushra. "Biochemical Study of Some New Cephems and Selenacephems Based on 6H-1,3-Thiazines and 6H-1,3-selenazines." Biomedicine and Chemical Sciences 1, no. 2 (2022): 93–109. https://doi.org/10.48112/bcs.v1i2.161.

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Several new and know 6-(4-substituted phenyl)-4-(4-substituted phenyl)-2-phenyl-6<em>H</em>-1,3-thiazine (or selenazine) (<strong>Z4B<sub>7</sub></strong>, <strong>Z4D<sub>5</sub></strong>, <strong>Z4B<sub>7'</sub></strong> and <strong>Z4D<sub>5'</sub></strong>) were prepared by the 1,4-Michael addition reaction of chalcone derivatives with thiobenzamide or phenylselenocarboxamide in basic medium (where the chalcones was formed by Claisen-Schimidt condensation of aromatic aldehydes with 4-substituted acetophenone in presence of sodium hydroxide).  These 6<em>H<

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12

Chun, Sung Su, Timur R. Tadjiev, Kyo Han Kim, J. H. Lee, and Suk Young Kim. "Biodegradation and Characterization of Phase Separated NaCa(PO₃)₃ and KCa(PO₃)₃ from Pure Ca(PO₃)₂." Key Engineering Materials 309-311 (May 2006): 211–14. http://dx.doi.org/10.4028/www.scientific.net/kem.309-311.211.

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Degradation characteristics of calcium metaphosphate (CMP) ceramics substituted by 5, 10, 15, 20 mol% of NaPO3 and KPO3, respectively, was evaluated in revised simulated body fluid (R-SBF) by measuring the weight change, flexural strength, crystalline phases, and surface morphology with immersion period. The weight loss of CMP substituted by KPO3 was significantly higher than that of CMP substituted by NaPO3. The weight loss in the KCa(PO3)3–CMP samples was due to the dissolution of KCa(PO3)3 phase. The flexural strength of NaCa(PO3)3–CMP samples increased, however, that of KCa(PO3)3–CMP sampl

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13

Berkeš, Dušan, Anna Koren̆ová, Peter Šafár̆, Helena Horváthová, and Nadežda Prónayová. "Indolyl substituted 4-oxobut-2-enoic acids. Synthesis and aza-Michael additions." Open Chemistry 5, no. 3 (2007): 688–705. http://dx.doi.org/10.2478/s11532-007-0019-7.

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AbstractThe synthesis of three new substituted 4-hetereoaryl-4-oxobut-2-enoic acids with indole ring substitutedin positions 3-, 5- and 7- is described. The addition of these Michael acceptors to 4-(1-phenylsulphonylpyrrol-3-yl)-4-oxobut-2-enoic acid in conjugate addition was explored using both racemic and chiral amines. In tandem with the crystallization-induced asymmetric transformation (CIAT) protocol the effective methodology for the synthesis of enantiomerically highly enriched substituted 2-amino-4-heteroaryl-4-oxobutanoic acids as multifunctional homotryptophan analogues was developed.

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14

Takayama, Hiroaki, Hiromasa Suzuki, Takashi Nomoto, and Sachiko Yamada. "Regioselective Alkylation of 3-Substituted 3-Sulfolenes." HETEROCYCLES 24, no. 2 (1986): 303. http://dx.doi.org/10.3987/r-1986-02-0303.

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15

Tao, Yu Tai, Chin Lung Liu, Shwu Jiuan Lee, and Shang Shing P. Chou. "Regioselective alkylation of 3-substituted 3-sulfolenes." Journal of Organic Chemistry 51, no. 24 (1986): 4718–21. http://dx.doi.org/10.1021/jo00374a043.

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16

MCNAMARA, D. J., P. D. COOK, L. B. ALLEN, M. J. KEHOE, C. S. HOLLAND, and A. G. TEEPE. "ChemInform Abstract: Synthesis, Antitumor Activity, and Antiviral Activity of 3-Substituted 3-Deazacytidines and 3-Substituted 3-Deazauridines." ChemInform 22, no. 16 (2010): no. http://dx.doi.org/10.1002/chin.199116269.

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17

Sogo, Yu, Daiki Yokoyama, Atsuo Ito, Atsushi Yamazaki, and Racquel Z. LeGeros. "F-Substituted Carbonate Apatite for Promoting Bone Formation." Key Engineering Materials 309-311 (May 2006): 141–44. http://dx.doi.org/10.4028/www.scientific.net/kem.309-311.141.

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Abstract. Fluoride (F-)-substituted type-B carbonate-containing hydroxyapatites (CHAPs) were prepared as bone substitutes with a F-releasing ability. The F- contents in the F-substituted CHAPs were 16-22 times larger than that in normal adult human bones. The carbonate contents in the F-substituted CHAPs corresponded to that in human bones. The F-substituted CHAPs released F- in an acetic acid – sodium acetate buffer at pH 4.9; within only 3 h, the F- concentration in the buffer increased to more than 63.9 µg L-1, which was 1.5~8.9 times higher than that in a body fluid of normal adult humans.

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18

Kostyuk, Aleksandr, Sergiy L. Filimonchuk, Kostiantyn Nazarenko, et al. "Synthesis of 3-Iodomethyl Sultams." Synlett 31, no. 17 (2020): 1696–700. http://dx.doi.org/10.1055/s-0040-1707227.

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A method for the synthesis of iodomethyl-substituted five-membered sultams has been developed. The sultams were synthesized by intramolecular iodoamination of alkenyl sulfamides. The method allows synthesis of N- and C-substituted sultams. NH-Sultams were prepared by acidic cleavage of the corresponding tert-butyl sultams that are readily available. Varying the length of alkenyl substituent at sulfamide it was shown that only five- and six-membered sultams could be prepared by this method. Neither four- nor seven-membered sultams were detected. The simple practical procedure and available star

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19

HAYASHI, Takao, Toshio TAKIDO, Hiroaki TASAKA, Nobuyuki TOMIZAWA, and Kunio ITABASHI. "Synthesis of 3-substituted benzochromones from alkyl-substituted naphthodioxaborins." NIPPON KAGAKU KAISHI, no. 1 (1991): 50–56. http://dx.doi.org/10.1246/nikkashi.1991.50.

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20

SHAMSOL KAHAR, SITI NURJAWAHER, MOHAMMAD RASHEDI ISMAIL-FITRY, MASNI MAT YUSOFF, ASHARI ROZZAMRI, JAMILAH BAKAR, and WAN ZUNAIRAH WAN IBADULLAH. "SUBSTITUTION OF FAT WITH VARIOUS TYPES OF SQUASHES AND GOURDS FROM THE Cucurbitaceae FAMILY IN THE PRODUCTION OF LOW-FAT BUFFALO MEAT PATTIES." Malaysian Applied Biology 50, no. 1 (2021): 169–79. http://dx.doi.org/10.55230/mabjournal.v50i1.1505.

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This study aimed to produce buffalo patties formulated with different types of squashes and gourds as fat substitutes. Kabocha squash, butternut squash, chayote squash, snake gourd and bottle gourd from the Cucurbitaceae family were used as the fat substitutes and buffalo meat patties with animal fat were the control. All patties were analysed and statistically compared in terms of physical properties and sensory acceptance. Generally, the moisture content, water holding capacity, cooking yield significantly increased for all samples compared to the control. The fat content reduced significant

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21

Wang, Hong Ming, Li Li Yang, Hua Zhu, and Yong Qi Yan. "Comparison of Effects of B₂O₃ and CaF₂ on Metallurgical Properties of High Basicity CaO-Based Flux." Advanced Materials Research 311-313 (August 2011): 966–69. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.966.

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B2O3 is employed as fluxing agent of high basicity CaO-based flux to substitute for CaF2. The effects of B2O3 and CaF2 on the metallurgy properties of CaO-based flux were investigated. The results indicate that the fluxing action of B2O3 is better than that of CaF2. For the high basicity CaO-based flux, when CaF2 is substituted with B2O3, the melting temperature can be decreased remarkably. Especially, when the mass ratios of CaO/SiO2 are in range of 5.25~8.0, the flux melting temperature is lower than 1300 °C. The inflection point temperature of flux viscosity-temperature curve is lowered rem

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22

P. L. Harale, M. E. Shelke, D.T. Tayade, and A. R. Kurhe. "Synthesis of 3-(substitutedthiocarbamide)-aniline derivatives from di-tert-butyl dicarbonate (BoC) protected 3-chloroaniline." GSC Biological and Pharmaceutical Sciences 28, no. 3 (2024): 046–52. http://dx.doi.org/10.30574/gscbps.2024.28.3.0313.

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Synthesis of substituted thiocarbamide derivatives is important in the fields of medicinal, agricultural, chemical, and pharmaceutical. Thiocarbamides are commonly utilized as starting materials for several organic synthetic processes and have been studied in search for easy and effective methods of chemical synthesis. In the existing research work, 3-chloroaniline was protected by a di-tert-butyl dicarbonate (BoC) protecting agent. Substituted thiocarbamide derivatives were synthesized using condensation of various substituted thioureas with amino group-protected 3-chloroaniline. The structur

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23

L. Comins, Daniel, and James J. Herrick. "Synthesis of Substituted 3-Pyridinecarboxaldehydes." HETEROCYCLES 26, no. 8 (1987): 2159. http://dx.doi.org/10.3987/r-1987-08-2159.

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24

Garcia, J. G., D. R. Billodeaux, and F. R. Fronczek. "Two 3-substituted 5-nitroindoles." Acta Crystallographica Section C Crystal Structure Communications 55, no. 2 (1999): IUC9900007. http://dx.doi.org/10.1107/s0108270199099783.

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25

Schrumpf, G., and P. G. Jones. "Substituted cyclopropanes. 3. Hexachlorocyclopropane (redetermination)." Acta Crystallographica Section C Crystal Structure Communications 43, no. 6 (1987): 1185–87. http://dx.doi.org/10.1107/s0108270187092576.

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26

Štetinová, Jarmila, Ján Leško, Miloslava Dandárová, Rudolf Kada, and Roman Koreň. "4-Aryl-3-substituted Furans." Collection of Czechoslovak Chemical Communications 59, no. 12 (1994): 2721–26. http://dx.doi.org/10.1135/cccc19942721.

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4-Aryl-3-substituted furans IIIa - IIId were prepared by Diels Alder reaction of 4-phenyloxazole (I) with compounds IIa - IId, containing an activated triple bond, and subsequent thermal decomposition of the cycloadduct.

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27

Kurkin, A. V., E. A. Sumtsova, and M. A. Yurovskaya. "Synthesis of 3-substituted pyrrolidines." Chemistry of Heterocyclic Compounds 43, no. 1 (2007): 34–40. http://dx.doi.org/10.1007/s10593-007-0005-1.

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28

da Silva, Gil V. J., Marcelo M. M. Pelisson, and Mauricio G. Constantino. "Synthesis of 3-substituted furans." Tetrahedron Letters 35, no. 40 (1994): 7327–30. http://dx.doi.org/10.1016/0040-4039(94)85305-3.

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29

Shevchenko, N. E. "Synthesis of 3-substituted furylethylamines." Chemistry of Heterocyclic Compounds 35, no. 2 (1999): 164–66. http://dx.doi.org/10.1007/bf02251702.

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30

Maruoka, Hiroshi, Fumi Okabe, and Kenji Yamagata. "Synthesis of substituted 3-pyrrolidinecarbonitriles." Journal of Heterocyclic Chemistry 44, no. 1 (2007): 201–3. http://dx.doi.org/10.1002/jhet.5570440131.

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31

Groutas, William C., Radhika Venkataraman, Michael J. Brubaker, and Fusao Tagusagawa. "Facile redox formation of a 3-substituted maleimide from a 3-substituted N-hydroxysuccinimide." Tetrahedron Letters 32, no. 43 (1991): 6093–96. http://dx.doi.org/10.1016/0040-4039(91)80761-t.

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32

Segall, Yoffi, Ella C. Kimmel, David R. Dohn, and John E. Casida. "3-Substituted 2-halopropenals: mutagenicity, detoxification and formation from 3-substituted 2,3-dihalopropanal promutagens." Mutation Research/Genetic Toxicology 158, no. 1-2 (1985): 61–68. http://dx.doi.org/10.1016/0165-1218(85)90098-9.

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33

Srivastav, Manish, MD Salahuddin, and S. M. Shantakumar. "Synthesis and Anti-inflammatory Activity of Some Novel 3-(6-Substituted-1, 3-benzothiazole-2-yl)-2-[{(4-substituted phenyl) amino} methyl] quinazolines-4 (3H)-ones." E-Journal of Chemistry 6, no. 4 (2009): 1055–62. http://dx.doi.org/10.1155/2009/507052.

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A series of novel 3-(6-substituted-1, 3-benzothiazole-2-yl)-2-[{(4-substituted phenyl) amino} methyl] quinazolines-4(3H)-ones were synthesized by treating 2-(chloromethyl)-3-(6-substituted-1, 3-benzothiazole-2-yl) quinazoline-4-(3H)-one (IIa-d) with various substituted amine. The compounds (IIa-d) prepared by treating 2-[(chloroacetyl) amino] benzoic acid with different 2-amino-6-substituted benzothiazole. Elemental analysis, IR,1HNMR and mass spectral data confirmed the structure of the newly synthesized compounds. Synthesized quinazolines-4-one derivative were investigated for their anti-inf

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34

Katritzky, Alan R., Sergei A. Belyakov, H. Dupont Durst, Ruixin Xu, and Naresh S. Dalal. "Syntheses of 3-(substituted)-2,4,6-triphenylverdazyls." Canadian Journal of Chemistry 72, no. 8 (1994): 1849–56. http://dx.doi.org/10.1139/v94-235.

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Two series of 2,4,6-triphenylverdazyls substituted at the C(3) position of the heterocyclic ring are obtained using new convenient synthetic methodology. Thus, crown ether assisted solid–liquid phase-transfer catalysis promotes the formation of 3-n-alkyl-substituted 2,4,6-triphenylverdazyls in the reactions of 1,3,5-triphenylformazan with n-alkyl bromides. Under PTC conditions, methylation of 3-(4-nitrophenyl)-1,5-diphenylformazan with methyl iodide exclusively gives the corresponding verdazyl radical. 3-Substituted 2,4,6-triphenylverdazyls containing various di(cyclo)alkylamino moieties at th

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35

Spruce, Kieran J., Charlie L. Hall, Jason Potticary, et al. "Crystal structure and Hirshfeld surface analysis of (E)-3-(3-iodophenyl)-1-(4-iodophenyl)prop-2-en-1-one." Acta Crystallographica Section E Crystallographic Communications 76, no. 1 (2020): 72–76. http://dx.doi.org/10.1107/s2056989019016402.

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The title compound, C15H10I2O, is a halogenated chalcone formed from two iodine substituted rings, one para-substituted and the other meta-substituted, linked through a prop-2-en-1-one spacer. In the molecule, the mean planes of the 3-iodophenyl and the 4-iodophenyl groups are twisted by 46.51 (15)°. The calculated electrostatic potential surfaces show the presence of σ-holes on both substituted iodines. In the crystal, the molecules are linked through type II halogen bonds, forming a sheet structure parallel to the bc plane. Between the sheets, weak intermolecular C—H...π interactions are obs

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36

D., C. Dash, Mahapatra A., P. Naik (Mrs.), K. Naik S., K. Mohapatra R., and S. Ghosh (Ms.). "Synthesis and characterization of UO22+, ZrO2+ and Th4+ complexes with 3-(p-substituted aryl)-2-thiohydantoin." Journal of Indian Chemical Society Vol. 85, June 2008 (2008): 595–99. https://doi.org/10.5281/zenodo.5816598.

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P.G. Department of Chemistry. Sambalpur University. Jyoti Vihar. Burla-768 019. Orissa, India <em>E-maiL :</em> dhruba _ dash@yahoo.co.in <em>Manuscript received 27 December 2007, revised 9 April 2008. accepted 15 April 2008</em> A few complexes of the type [ML<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>] and [ThL<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>(NO<sub>3</sub>) <sub>2</sub>]. where M = UO<sub>2</sub><sup>2+</sup>and ZrO<sup>2+</sup>; HL = 3- benzylideneimino-2-thiohydantoin, 3-p-nitrobenzylideneimino-2-thiohydantoin, 3-p-methoxybenzylideneimino-2-thiohydantoin, 3-p-chlorobenzylideneimino-2

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37

CAO, GUIXIN, JINCANG ZHANG, SHIXUN CAO, CHAO JING та XUECHU SHEN. "STUDY OF POSITRON LIFETIME AND INFRARED SPECTROSCOPY FOR Pr-SUBSTITUTED YBa2Cu3O7-δ SYSTEMS". International Journal of Modern Physics B 18, № 22 (2004): 3001–14. http://dx.doi.org/10.1142/s0217979204026366.

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The Pr -substituted YBa 2 Cu 3 O 7-δ( Y 123) superconducting systems with the content of 0.0–1.0 have been systematically studied by positron lifetime and infrared absorption experiments. The results show that the short lifetime τ1 decreases as a function of Pr -substitution x below x=0.6, but when above x=0.6, it increases inversely. The long lifetime τ2 decreases as a function of Pr -substituted x. Based on the present results, we discuss that Pr 4+ substitutes on Ba 2+ ion and forms Pr Ba defects. The variation of τ1 is caused by the oxygen vacancies and τ2 is probably affected by the absen

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38

Gredičak, Matija, and Danijel Glavač. "Organocatalytic Asymmetric Transformations of 3-Substituted 3-Hydroxyisoindolinones." Synlett 28, no. 08 (2017): 889–97. http://dx.doi.org/10.1055/s-0036-1588759.

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39

Arrowood, Tina L., and Steven R. Kass. "Synthesis and thermolysis of 3-substituted 3-trimethylsilylcyclopropenes." Tetrahedron 55, no. 22 (1999): 6739–48. http://dx.doi.org/10.1016/s0040-4020(99)00276-8.

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40

Pietruszka, Jörg, and Chuan Wang. "Laccase-catalyzed 3-Arylation of 3-Substituted Oxindoles." ChemCatChem 4, no. 6 (2012): 782–85. http://dx.doi.org/10.1002/cctc.201200051.

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41

VEENA, R. AGARWAL, R. NAUTIYAL SUDHA, and D. MUKERJI D. "Synthesis and Hypoglycemic Activity of Substituted-3-(substituted-arylcarbiminoacetyl)aminomethyl-4(3H)-quinazolone." Journal of Indian Chemical Society Vol. 63, Sep 1986 (1986): 825–27. https://doi.org/10.5281/zenodo.6302294.

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Department of Chemistry, Lucknow University, Lucknow-226 007 <em>Manuscript received 31 October 1985, accepted 25 June 1986</em> Thirtytwo new substituted-3-(substituted-arylcarbitninoacetyl)aminometh31-4(3<em>H</em>)- quinazolone (2) were synthesised by condensation of substituted-3-(4 -aryl substituted-carbamidoacetyl)aminomethyl-4(3<em>H</em>)-quinazolones (I) and <em>p</em>-substituted-aniline in anhydrous pyridine. The compounds were screened for hypoglycemic activity Only eleven out of thirtytwo compounds were found to be hypoglycemic. The compounds were characterised by t

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42

Hradil, Pavel, and Josef Jirman. "Synthesis of 2-Aryl-3-hydroxyquinolin-4(1H)-ones." Collection of Czechoslovak Chemical Communications 60, no. 8 (1995): 1357–66. http://dx.doi.org/10.1135/cccc19951357.

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Eight substituted phenacyl anthranilates have been prepared by reaction of sodium anthranilate with substituted phenacyl halides in dimethylformamide in the yields from 31 to 93%. The phenacyl esters were cyclized in polyphosphoric acid or by mere heating to give the respective substituted 2-aryl-3-hydroxyquinolin-4(1H)-ones in the yields from 77 to 98%. All the compounds prepared have been characterized by their 1H and 13C NMR spectra.

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43

Celewicz, Lech, Wojciech Urjasz, and Krzysztof Golankiewicz. "Synthesis of 3′-N-Substituted 3′-Amino-3′-Deoxythymidine Derivatives." Nucleosides and Nucleotides 12, no. 9 (1993): 951–66. http://dx.doi.org/10.1080/07328319308018565.

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Appani, Ramgopal, Baburao Bhukya, and Kiran Gangarapu. "Synthesis and Antibacterial Activity of 3-(Substituted)-2-(4-oxo-2-phenylquinazolin-3(4H)-ylamino)quinazolin-4(3H)-one." Scientifica 2016 (2016): 1–5. http://dx.doi.org/10.1155/2016/1249201.

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A series of novel 3-(substituted)-2-(substituted quinazolinylamino)quinazolin-4(3H)-ones were synthesized by the reaction of 3-(substituted)-2-hydrazino-quinazoline-4(3H)-ones with 2-phenyl-3,1-benzoxazin-4-one. The starting materials 3-(substituted)-2-hydrazino-quinazolin-4(3H)-ones were synthesized from various primary amines by a multistep synthesis. All the title compounds were tested for their antibacterial activity using ciprofloxacin as reference standard. Compounds 3-(4-fluorophenyl)-2-(4-oxo-2-phenylquinazolin-3(4H)-ylamino)quinazolin-4(3H)-one (9a) and 3-(4-chlorophenyl)-2-(4-oxo-2-p

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45

Pelipko, V. V., K. A. Gomonov, I. A. Litvinov, R. I. Baichurin, and S. V. Makarenko. "Reaction of alkyl 3-bromo-3-nitroacrylates with substituted hydrazines. Synthesis of N′-substituted alkyl 3-nitropyruvate hydrazones." Russian Chemical Bulletin 71, no. 4 (2022): 740–49. http://dx.doi.org/10.1007/s11172-022-3474-6.

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46

Pelipko, V. V., K. A. Gomonov, I. A. Litvinov, R. I. Baichurin, and S. V. Makarenko. "Reaction of alkyl 3-bromo-3-nitroacrylates with substituted hydrazines. Synthesis of N′-substituted alkyl 3-nitropyruvate hydrazones." Russian Chemical Bulletin 71, no. 4 (2022): 740–49. http://dx.doi.org/10.1007/s11172-022-3474-6.

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47

K., S. Panpaliya* D. T. Tayade R. S. Shaikh. "SYNTHESIS OF 1-O-TOLYL-3-SUBSTITUTED-2,6-DITHIO-4-AMINO -[(2-O-TOLYLTHIOCARBAMIDO)-1,3-BENZOTHIAZOLO] -1,3,5-TRIAZINE." Indo American Journal of Pharmaceutical Sciences 04, no. 12 (2018): 4822–25. https://doi.org/10.5281/zenodo.1134392.

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We reported synthesis of 1-o-tolyl-3-substituted-2,6-dithio-4-amino-[(2-o-tolylthiocarbamido)-1,3-benzothiazolo] -1,3,5-triazines by isomerisation of 2-substituted-imino-6-o-tolylimino-4-[(2-o-tolylthiocarbamido)-1,3 -benzothiazolo]-1,3,5-dithiazines in 10 % aqueous ethanolic sodium bicarbonate mixture in ethanol solvent. The structure determination and justification of the synthesized compounds were done on the basis of elemental analysis, chemical characteristics and spectral studies. Keywords:2-substituted-imino-6-o-tolylimino-4-[(2-o-tolylthiocarbamido)-1,3-benzothiazolo]-1,3,5-dithiazines

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48

YOSHII, SHIN, KUMIKO MIYAMOTO, and TAMIO NISHIMURA. "Antiviral and Antibacterial Activities of 1-Amino-3-(substituted benzenesulfonyl) guanidines and 3-(Substituted benzenesulfonylamino)-5, 6-disubstituted-1, 2, 4-triazines." YAKUGAKU ZASSHI 106, no. 4 (1986): 295–301. http://dx.doi.org/10.1248/yakushi1947.106.4_295.

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Sandris, Constantine, and Athanase Tsolomitis. "Synthesis of 2-Substituted 3(2H)-Isothiazolones from 2-Substituted 5-Aroyl-3(2H)-isothiazolones." HETEROCYCLES 25, no. 1 (1987): 569. http://dx.doi.org/10.3987/s-1987-01-0569.

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50

Chew, Warren, Rosemary C. Hynes, and David N. Harpp. "Synthesis of substituted fluorenones and substituted 3',3'-dichlorospiro[fluorene-9,2'-thiiranes] and their reactivities." Journal of Organic Chemistry 58, no. 16 (1993): 4398–404. http://dx.doi.org/10.1021/jo00068a039.

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