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.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 891, doi. 10.1002/jhet.5570280410

By:

Pecorari, Piergiorgio;
Rinaldi, Marcella;
Costi, Maria Paola;
Antolini, Luciano

Publication type:

Article

Pyrazine nucleoside analogs. Synthesis and reactions of some 5-thio-substituted pyrazines.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1131, doi. 10.1002/jhet.5570280450

By:

Tuntiwachwuttikul, Pittaya;
Bardos, Thomas J.;
Bobek, Miroslav

Publication type:

Article

Conjugated macrocycles related to the porphyrins. Part 2.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 965, doi. 10.1002/jhet.5570280421

By:

Lash, Timothy D.;
Armiger, Yoek Lin See-Tow

Publication type:

Article

Sulfenylation of some pyrroles and indoles.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1025, doi. 10.1002/jhet.5570280432

By:

Gilow, Helmuth M.;
Brown, Christopher S.;
Copeland, John N.;
Kelly, Keith E.

Publication type:

Article

A new approach to the synthesis of substituted 2(1 H)-quinolinones.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 849, doi. 10.1002/jhet.5570280403

By:

Theodoridis, George;
Malamas, Patricia

Publication type:

Article

Studies on the reaction of 2-aminoacetophenone with thiophosgene.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1091, doi. 10.1002/jhet.5570280443

By:

Morgenstern, Olaf;
Richter, Peter;
Rouvinen, Juha;
Mälkönen, Pentti J.;
Vainiotalo, Pirjo;
Hänninen, Kari;
Ahlgrén, Markku;
Vepsäläinen, Jouko

Publication type:

Article

Condensed heterocyclic lactams. I. Study on the cyclization methods resulting in 4-aryl-3,4-dihydroquinolin-2(1 H)-ones.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 919, doi. 10.1002/jhet.5570280414

By:

Hazai, László;
Deák, Gyula;
Sohár, Pál;
Tóth, Gábor;
Tamás, József

Publication type:

Article

Competitive free radical 4-nitrophenylation of pyridine and thiophene.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1153, doi. 10.1002/jhet.5570280454

By:

Klemm, L. H.;
Dorsey, James

Publication type:

Article

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.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 987, doi. 10.1002/jhet.5570280425

By:

Shaw, John T.;
Corbett, Wendy L.;
Cuny, Gregory D.;
Egler, Mallory F.;
Peciulis, Victoria S.

Publication type:

Article

Pyrazoles. 5.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1047, doi. 10.1002/jhet.5570280436

By:

Heinisch, Gottfried;
Hollub, Christian;
Holzer, Wolfgang

Publication type:

Article

Electrophilic benzylation of 2-aminopyridine ring.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 875, doi. 10.1002/jhet.5570280407

By:

Kowalski, Piotr

Publication type:

Article

Compounds with potential second order non-linear optical activity.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1115, doi. 10.1002/jhet.5570280447

By:

Katritzky, Alan R.;
Rao, M. Suresh Chander;
Stevens, John

Publication type:

Article

Synthesis of 5,6-dihydro-4 H-pyrrolo[1,2- a]thieno[2,3- f][1,4]diazepines.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 945, doi. 10.1002/jhet.5570280418

By:

Vega, Salvador;
Gil, M. Soledad

Publication type:

Article

Synthesis and reactions of halogenated thiazole isocyanates.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1003, doi. 10.1002/jhet.5570280429

By:

South, Michael S.

Publication type:

Article

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.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 955, doi. 10.1002/jhet.5570280420

By:

Kuo, Sheng-Chu;
Huang, Shung-Chieh;
Huang, Li-Jiau;
Cheng, Hong-Elk;
Lin, Tsung-Ping;
Wu, Chun-Hsiung;
Ishii, Katsumi;
Nakamura, Hideo

Publication type:

Article

Reactions of a 4-(trifluoromethyl)thiazole dianion.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1017, doi. 10.1002/jhet.5570280431

By:

South, Michael S.;
Van Sant, Karey A.

Publication type:

Article

Cycloaddition von benzothiet an oxime, oximether und oximester.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 843, doi. 10.1002/jhet.5570280402

By:

Meier, Herbert;
Saul, Klaus;
Mengel, Rudolf;
Niedermann, Hans-Peter

Publication type:

Article

Intramolecular photocyclization of N-[(2-haloaryl)methyl]pyridinium and n-(arylmethyl)-2-halopyridinium salts.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1083, doi. 10.1002/jhet.5570280442

By:

Park, Y.-T.;
Joo, C.-H.;
Choi, C.-D.;
Park, K.-S.

Publication type:

Article

Synthèse et caractérisation de bis acridines pontées en positions 2, 3 ou 4.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 913, doi. 10.1002/jhet.5570280413

By:

Boyer, Gérard;
Galy, Jean-Pierre;
Barbe, Jacques

Publication type:

Article

Synthesis and binding activity of 4-azanicotine.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1147, doi. 10.1002/jhet.5570280453

By:

Howell, Amy R.;
Martin, W. R.;
Sloan, J. W.;
Smith, Walter T.

Publication type:

Article

Synthesis of 4-phenyl-2 h-benzopyrans.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 983, doi. 10.1002/jhet.5570280424

By:

Jurd, Leonard

Publication type:

Article

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.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1043, doi. 10.1002/jhet.5570280435

By:

Vors, Jean-Pierre

Publication type:

Article

Stereochemistry of cycloadducts from 3,4-dihydro-6,7-dimethoxyisoquinoline ylide and olefins.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 867, doi. 10.1002/jhet.5570280406

By:

Janke, Frank;
Himmelreich, Uwe;
Tóth, Gábor;
Tischer, Thomas;
Kádas, István;
Bende, Zoltán;
Töke, László

Publication type:

Article

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.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1111, doi. 10.1002/jhet.5570280446

By:

Hadjimihalakis, Phaedon M.

Publication type:

Article

Synthesis of functionalized N-methylpyrroles.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 939, doi. 10.1002/jhet.5570280417

By:

Barrero, A. F.;
Sánchez, J. F.;
Oltra, J. E.;
Teva, D.

Publication type:

Article

'Azaphilic addition' of methyl lithium to 3,6-bisalkylthio-1,2,4,5-tetrazines: A remarkable dichotomy.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1163, doi. 10.1002/jhet.5570280457

By:

Wilkes, Marty C.

Publication type:

Article

Studies on polycyclic thiaarenes: Part II.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 999, doi. 10.1002/jhet.5570280428

By:

Kar, Gandhi K.;
Karmakar, Arun C.;
Ray, Jayanta K.

Publication type:

Article

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.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1067, doi. 10.1002/jhet.5570280439

By:

Okada, Tetsuo;
Tsuji, Teruji;
Tsushima, Tadahiko;
Ezumi, Kiyoshi;
Yoshida, Tadashi;
Matsuura, Shinzo

Publication type:

Article

An unusual labilization of a 4-(trifluoromethyl)thiazole.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1013, doi. 10.1002/jhet.5570280430

By:

South, Michael S.

Publication type:

Article

Diquaternary Salts of 4,4′-Bipyridine as Electron Relays for the Photoreduction of Water.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 827, doi. 10.1002/jhet.5570280401

By:

Summers, Lindsay A.

Publication type:

Article

Photoreaction of benzofuroxan.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1079, doi. 10.1002/jhet.5570280441

By:

Hasegawa, Minoru;
Takabatake, Tohru

Publication type:

Article

Synthesis of trifluoromethylthiazoles and their application to azo dyes.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 907, doi. 10.1002/jhet.5570280412

By:

Tanaka, Kiyoshi;
Nomura, Kazuto;
Oda, Hitoshi;
Yoshida, Shouhei;
Mitsuhashi, Keiryo

Publication type:

Article

Studies on pyrrolidones. Convenient syntheses of methyl, methyl N-methyl- and methyl N-methoxymethylpyroglutamate.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1143, doi. 10.1002/jhet.5570280452

By:

Cauliez, Pascal;
Rigo, Benoǐt;
Fasseur, Dominique;
Couturier, Daniel

Publication type:

Article

Synthesis of 10-thia-5-deazafolic acid and 2-desamino-2-oxo-10-thia-5-deazafolic acid.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 977, doi. 10.1002/jhet.5570280423

By:

Singh, Shyam K.;
Hynes, John B.

Publication type:

Article

Synthesis of pyrimidine derivatives using N-bis(methylthio)methylenecyanamide.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1039, doi. 10.1002/jhet.5570280434

By:

Tominaga, Yoshinori;
Ohno, Syuichirou;
Kohra, Shinya;
Fujito, Hiroshi;
Mazurae, Hisako

Publication type:

Article

A novel synthesis of 2-arylaminothiazolo[4,5- d]pyridazinones.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 859, doi. 10.1002/jhet.5570280405

By:

Yamasaki, Tetsuo;
Kawaminami, Eiji;
Uchimura, Fumi;
Okawara, Tadashi;
Furukawa, Mitsuru

Publication type:

Article

Synthesis of condensed quinoxalines.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1105, doi. 10.1002/jhet.5570280445

By:

Sabnis, R. W.;
Rangnekar, D. W.

Publication type:

Article

Synthesis of analogs of amrinone: 4-(3,4-Disubstitutedphenyl)pyridines and derivatives thereof.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 933, doi. 10.1002/jhet.5570280416

By:

Singh, Baldev;
Lesher, George Y.

Publication type:

Article

Synthesis of 2- and 4-substituted 5,12-dihydroxy-6,11-dioxo-1-azanaphthacenes from 2-aminoquinizarine.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1161, doi. 10.1002/jhet.5570280456

By:

Chauhan, S. M. S.;
Gupta, Mamta;
Nizar, P. N. H.

Publication type:

Article

Benzimidazole condensed ring systems. 7.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 995, doi. 10.1002/jhet.5570280427

By:

Badawey, El-Sayed A. M.;
Kappe, Thomas

Publication type:

Article

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

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1061, doi. 10.1002/jhet.5570280438

By:

Okada, Tetsuo;
Tsuji, Teruji;
Tsushima, Tadahiko;
Yoshida, Tadashi;
Matsuura, Shinzo

Publication type:

Article

Reaction of α,β-unsaturated carbodiimides with enamines leading to fused pyridine derivatives.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 885, doi. 10.1002/jhet.5570280409

By:

Noguchi, Michihiko;
Onimura, Kenjiro;
Isomura, Yuji;
Kajigaeshi, Shoji

Publication type:

Article

α-Hydroxyacylation of pyridine.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1127, doi. 10.1002/jhet.5570280449

By:

Sliwa, Henri;
Randria-Raharimanana, Clarisse;
Cordonnier, Guy

Publication type:

Article

Regioselectivity in S<sub>N</sub>H reactions of some 3-nitro-1,8-naphthyridines with chloromethyl phenyl sulfone.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1075, doi. 10.1002/jhet.5570280440

By:

Grzegozek, Maria;
Woźniak, Marian;
Barański, Andrzej;
Van Der Plas, Henk C.

Publication type:

Article

2-Aryloxazolo[4,5- b]- et [5,4- b]pyridines: Synthèse et acylation par substitution radicalaire.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 899, doi. 10.1002/jhet.5570280411

By:

Flouzat, C.;
Guillaumet, G.

Publication type:

Article

Some novel S-mono- and S,S'-unsymmetrical di-substituted derivatives of 1,3,4-thiadiazoledithione.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1139, doi. 10.1002/jhet.5570280451

By:

Katritzky, Alan R.;
Borowiecka, J.;
Fan, Wei-Qiang;
Brannigan, Lawrence H.

Publication type:

Article

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.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 971, doi. 10.1002/jhet.5570280422

By:

Podhorez, David E.

Publication type:

Article

Recent work on the synthesis of 3,6-dibenzoylcarbazole.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1035, doi. 10.1002/jhet.5570280433

By:

Bonesi, Sergio Mauricio;
Erra-Balsells, Rosa

Publication type:

Article

Studies on silyl furans. II.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 853, doi. 10.1002/jhet.5570280404

By:

Nakayama, Koukji;
Harigaya, Yoshiharu;
Okamoto, Hiroshi;
Tanaka, Akira

Publication type:

Article

6-Substituted-9-(3-formamidobenzyl)-9 H-purines. Benzodiazepine receptor binding activity.

Published in:

Journal of Heterocyclic Chemistry, 1991, v. 28, n. 4, p. 1099, doi. 10.1002/jhet.5570280444

By:

Kelley, James L.;
Mclean, Ed W.;
Ferris, Robert M.;
Howard, James L.

Publication type:

Article