Works matching IS 0022152X AND DT 1991 AND VI 28 AND IP 4
Results: 57
Cyclization reactions of 1,3-dibromopropan-2-ol, 2,3-dibromopropan-1-ol and 1-bromomethyloxirane with 6-amino-2,3-dihydro-2-thioxo-4(1 H)-pyrimidinone.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 891, doi. 10.1002/jhet.5570280410
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Pyrazine nucleoside analogs. Synthesis and reactions of some 5-thio-substituted pyrazines.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1131, doi. 10.1002/jhet.5570280450
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Conjugated macrocycles related to the porphyrins. Part 2.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 965, doi. 10.1002/jhet.5570280421
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Sulfenylation of some pyrroles and indoles.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1025, doi. 10.1002/jhet.5570280432
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A new approach to the synthesis of substituted 2(1 H)-quinolinones.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 849, doi. 10.1002/jhet.5570280403
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Studies on the reaction of 2-aminoacetophenone with thiophosgene.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1091, doi. 10.1002/jhet.5570280443
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Condensed heterocyclic lactams. I. Study on the cyclization methods resulting in 4-aryl-3,4-dihydroquinolin-2(1 H)-ones.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 919, doi. 10.1002/jhet.5570280414
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Competitive free radical 4-nitrophenylation of pyridine and thiophene.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1153, doi. 10.1002/jhet.5570280454
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Fused s-triazino heterocycles. XVII. 8,13-Dihydro-1,3,7,8,13c-pentaazabenzo[ de]naphthacene, 7 H-1,3,7,8,11b,12,14-heptaazadibenzo[ de,hi]naphthacene and 8 H-1,3,7,8,13,14c-hexaazabenzo[4,5]cyclohepta[1,2- a]phenalene, three new ring systems.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 987, doi. 10.1002/jhet.5570280425
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Pyrazoles. 5.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1047, doi. 10.1002/jhet.5570280436
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Electrophilic benzylation of 2-aminopyridine ring.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 875, doi. 10.1002/jhet.5570280407
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Compounds with potential second order non-linear optical activity.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1115, doi. 10.1002/jhet.5570280447
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Synthesis of 5,6-dihydro-4 H-pyrrolo[1,2- a]thieno[2,3- f][1,4]diazepines.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 945, doi. 10.1002/jhet.5570280418
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Synthesis and reactions of halogenated thiazole isocyanates.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1003, doi. 10.1002/jhet.5570280429
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Studies of heterocyclic compounds. VIII. Synthesis, anti-inflammatory and antiallergic activities of n-alkyl-2,3,4,9-tetrahydrofuro[2,3- b]quinoline-3,4-diones and related compounds.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 955, doi. 10.1002/jhet.5570280420
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Reactions of a 4-(trifluoromethyl)thiazole dianion.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1017, doi. 10.1002/jhet.5570280431
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Cycloaddition von benzothiet an oxime, oximether und oximester.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 843, doi. 10.1002/jhet.5570280402
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Intramolecular photocyclization of N-[(2-haloaryl)methyl]pyridinium and n-(arylmethyl)-2-halopyridinium salts.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1083, doi. 10.1002/jhet.5570280442
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Synthèse et caractérisation de bis acridines pontées en positions 2, 3 ou 4.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 913, doi. 10.1002/jhet.5570280413
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Synthesis and binding activity of 4-azanicotine.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1147, doi. 10.1002/jhet.5570280453
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Synthesis of 4-phenyl-2 h-benzopyrans.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 983, doi. 10.1002/jhet.5570280424
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A novel approach to the pyrido[4,3- c]pyridazine ring. Synthesis of pyrido[4,3- c]pyridazin-5(6 H)-one from 3,4-disubstituted pyridazines.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1043, doi. 10.1002/jhet.5570280435
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Stereochemistry of cycloadducts from 3,4-dihydro-6,7-dimethoxyisoquinoline ylide and olefins.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 867, doi. 10.1002/jhet.5570280406
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Derivatives of 3,4-dihydro-2 H-benzo[ b][1,4]dioxepin. Preparation of 7,8-dihydro-6 H-[1,4]dioxepino[2,3- f]-2,1,3-benzoxadiazole 1-oxide.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1111, doi. 10.1002/jhet.5570280446
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Synthesis of functionalized N-methylpyrroles.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 939, doi. 10.1002/jhet.5570280417
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'Azaphilic addition' of methyl lithium to 3,6-bisalkylthio-1,2,4,5-tetrazines: A remarkable dichotomy.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1163, doi. 10.1002/jhet.5570280457
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Studies on polycyclic thiaarenes: Part II.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 999, doi. 10.1002/jhet.5570280428
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Synthesis and antibacterial activities of novel oxazine and thiazine ring-fused tricyclic quinolonecarboxylic acids: 10-(Alicyclic amino)-9-fluoro-7-oxo-7 H-pyrido[1,2,3- de][1,4]benzoxazine-6-carboxylic acids and the corresponding 1-thia congeners.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1067, doi. 10.1002/jhet.5570280439
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An unusual labilization of a 4-(trifluoromethyl)thiazole.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1013, doi. 10.1002/jhet.5570280430
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Diquaternary Salts of 4,4′-Bipyridine as Electron Relays for the Photoreduction of Water.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 827, doi. 10.1002/jhet.5570280401
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Photoreaction of benzofuroxan.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1079, doi. 10.1002/jhet.5570280441
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Synthesis of trifluoromethylthiazoles and their application to azo dyes.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 907, doi. 10.1002/jhet.5570280412
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Studies on pyrrolidones. Convenient syntheses of methyl, methyl N-methyl- and methyl N-methoxymethylpyroglutamate.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1143, doi. 10.1002/jhet.5570280452
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Synthesis of 10-thia-5-deazafolic acid and 2-desamino-2-oxo-10-thia-5-deazafolic acid.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 977, doi. 10.1002/jhet.5570280423
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Synthesis of pyrimidine derivatives using N-bis(methylthio)methylenecyanamide.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1039, doi. 10.1002/jhet.5570280434
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A novel synthesis of 2-arylaminothiazolo[4,5- d]pyridazinones.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 859, doi. 10.1002/jhet.5570280405
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Synthesis of condensed quinoxalines.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1105, doi. 10.1002/jhet.5570280445
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Synthesis of analogs of amrinone: 4-(3,4-Disubstitutedphenyl)pyridines and derivatives thereof.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 933, doi. 10.1002/jhet.5570280416
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Synthesis of 2- and 4-substituted 5,12-dihydroxy-6,11-dioxo-1-azanaphthacenes from 2-aminoquinizarine.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1161, doi. 10.1002/jhet.5570280456
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Benzimidazole condensed ring systems. 7.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 995, doi. 10.1002/jhet.5570280427
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Synthesis and antibacterial activities of novel dihydrooxazine and dihydrothiazine ring-fused tricyclic quinolonecarboxylic acids: 9-Fluoro-3-methylene-10-(4-methylpiperazin-1-yl)-7-oxo-2,3-dihydro-7 h-pyrido[1,2,3- de][1,4]benzoxazine-6-carboxylic acid and its 1-thia congener
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1061, doi. 10.1002/jhet.5570280438
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Reaction of α,β-unsaturated carbodiimides with enamines leading to fused pyridine derivatives.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 885, doi. 10.1002/jhet.5570280409
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α-Hydroxyacylation of pyridine.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1127, doi. 10.1002/jhet.5570280449
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Regioselectivity in S<sub>N</sub>H reactions of some 3-nitro-1,8-naphthyridines with chloromethyl phenyl sulfone.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1075, doi. 10.1002/jhet.5570280440
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2-Aryloxazolo[4,5- b]- et [5,4- b]pyridines: Synthèse et acylation par substitution radicalaire.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 899, doi. 10.1002/jhet.5570280411
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Some novel S-mono- and S,S'-unsymmetrical di-substituted derivatives of 1,3,4-thiadiazoledithione.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1139, doi. 10.1002/jhet.5570280451
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Stepwise approach to the 2,3-dihydroimidazo[1,2- a]pyridine and 5-oxo-1,2,3,5-tetrahydroimidazo[1,2- a]pyridine ring systems.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 971, doi. 10.1002/jhet.5570280422
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Recent work on the synthesis of 3,6-dibenzoylcarbazole.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1035, doi. 10.1002/jhet.5570280433
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Studies on silyl furans. II.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 853, doi. 10.1002/jhet.5570280404
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6-Substituted-9-(3-formamidobenzyl)-9 H-purines. Benzodiazepine receptor binding activity.
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- Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1099, doi. 10.1002/jhet.5570280444
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