Works matching IS 0022152X AND DT 1988 AND VI 25 AND IP 4
Results: 48
1,3-Dipolar cycloadditions of mesitonitrile oxide with (9-fluorenylidene)-aceto- and malono-nitriles. Synthesis of mono- and bis-1,2,4-oxadiazolylmethane derivatives.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1099, doi. 10.1002/jhet.5570250410
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Studies on the chemistry of O,N- and S,N-containing heterocycles. 3.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1151, doi. 10.1002/jhet.5570250421
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Condensed 1,3-benzothiazinones. 1. Facile synthesis of 2-amino-1,2,4-triazolo[5,1- b][1,3]-benzothiazin-9-one.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1215, doi. 10.1002/jhet.5570250432
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New heterocyclic compounds derived from diethyl 2,5-dioxo-1,4-cyclohexanedicarboxylate and 2-aminobenzophenone.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1063, doi. 10.1002/jhet.5570250403
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Conjugated azoalkenes. Part V. Facile synthesis of new 1-aroylamino-3-sulfonylpyrroles by reaction of aroylazoalkenes with 1,3-ketosulfones.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1263, doi. 10.1002/jhet.5570250443
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Synthesis and reactions of some 6-(2-hydroxy-1-naphthyl)-1,2,4-triazines.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1117, doi. 10.1002/jhet.5570250414
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Direct synthesis of 2,4-diaminoquinazolines from 2-fluorobenzonitriles.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1173, doi. 10.1002/jhet.5570250425
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Rearrangement reactions of heterocycles. 12.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1231, doi. 10.1002/jhet.5570250436
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Acetal formation from formylthiophene-2-carboxylic acids and recalculation of σ<sub> I</sub> and σ<sub> R</sub> substituent constants of the acetal group by <sup>13</sup>C NMR chemical shifts.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1083, doi. 10.1002/jhet.5570250407
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Synthesis of cyclic oxoenaminoesters.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1275, doi. 10.1002/jhet.5570250447
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Synthesis of substituted pyrroles from ketones.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1135, doi. 10.1002/jhet.5570250418
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Synthesis of heterocyclic compounds from 3-acetyl-3-chloropropyl acetate.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1193, doi. 10.1002/jhet.5570250429
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Furopyridines. VIII. Molecular structure and two-dimensional NMR spectral assignment of 2,14-dimethyl-8aβ-hydroxy-7,10-dioxo-5β,6β-(propano)-6α,8α-(ethanoimino)- trans-perhydroisoquinoline.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1143, doi. 10.1002/jhet.5570250420
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Furopyridines. IX.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1205, doi. 10.1002/jhet.5570250431
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<sup>13</sup>C NMR studies of substituted 2,3-diphenylindoles. Methyl and nitro derivatives.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1059, doi. 10.1002/jhet.5570250402
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Ring transformation of 1,5-benzoxazepines into spirobenzoxazoles. Synthesis of pyrazolo[1′,5′:3,4][1,2,4]triazino-[5,6- b][1,5]benzoxazepines and spiro[benzoxazole-2′(3′ H),4(1 H)-pyrazolo[5,1- c][1,2,4]triazines].
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1259, doi. 10.1002/jhet.5570250442
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The insertion and extrusion of heterosulfur bridges. XV. S-bridging of 2,2′-binaphthyl and 1-(2-naphthyl)cyclohexene. Studies on hydrodehalogenation during the reaction.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1111, doi. 10.1002/jhet.5570250413
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Synthesis and structure elucidation of N-methyl-4-(2-benzo-γ-pyronyl)-1,2,3-triazoles.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1167, doi. 10.1002/jhet.5570250424
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Synthesis of unsymmetric bile pigments: Mesobilirubin-VIIIα, 17-desvinyl-17-ethyl-bilirubin-VIIIα and 12-despropionic acid-12-ethyl-mesobilirubin-XIIIα.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1227, doi. 10.1002/jhet.5570250435
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Hydroxymethylation and aminomethylation of 6-mercaptopurine and its derivatives.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1077, doi. 10.1002/jhet.5570250406
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Phosphonomethylation of 2-aminoethanethiol and thiazolidine. An unexpected product.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1273, doi. 10.1002/jhet.5570250446
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Pyridinethiones. XV. 3-Methylthio-2-pentene-1,5-diones as synthons for 4-methylthio-2(1 H)-pyridinethiones, and synthesis of 4-methylene-1,4-dihydropyridines.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1129, doi. 10.1002/jhet.5570250417
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Reaction of 4-styryl-1,2,3-benzoxathiazine 2,2-dioxides with diazomethane: Synthesis of a novel heterocyclic system.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1191, doi. 10.1002/jhet.5570250428
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Oxidation of 3-hydroxykynurenine. A reexamination.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1247, doi. 10.1002/jhet.5570250439
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Regioselective proton-catalyzed diarylmethylation of indoles with 9 H-xanthydrol, dibenzosuberenol, and bis[4-dimethylaminophenyl]methanol.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1199, doi. 10.1002/jhet.5570250430
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The preparation of 3-hydrazino-4-hydroxy- and 3-hydrazino-4-methoxypyridine from sydnones.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1055, doi. 10.1002/jhet.5570250401
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Synthesis and anticonvulsant activity of 1-benzyl-4-alkylamino-1 H-imidazo[4,5- c]pyridines.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1255, doi. 10.1002/jhet.5570250441
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A novel approach to synthesis of the cinnoline ring system via organoiron(cyclopentadienyl) complexes.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1107, doi. 10.1002/jhet.5570250412
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<sup>13</sup>C NMR spectra of 1-( N-arylidene)amino-1,2,3-triazoles.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1161, doi. 10.1002/jhet.5570250423
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Studies of the reaction of substituted 1,2-dithiole-3-thiones and -3-ones with sodium cyanide in acetonitrile.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1223, doi. 10.1002/jhet.5570250434
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A new route to 1,2,4- triazoles and 1,3,4- thiadiazoles from 1-acylbithiourea.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1071, doi. 10.1002/jhet.5570250405
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Synthesis of substituted benzo[ b]thiophenes by acid-catalyzed cyclization of thiophenylacetals and ketones.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1271, doi. 10.1002/jhet.5570250445
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Selective method for the preparation of isomeric N-alkyl and N-aryl-3(5)-amino-5(3)-hydroxy-1 H-pyrazole-1-carboxamides.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1123, doi. 10.1002/jhet.5570250416
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Synthesis of 2-oxo-3-benzothiazolineacetyl chloride ( 7), 5-chloro-2-oxo-3-benzothiazolineacetyl chloride ( 8) and derivatives.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1183, doi. 10.1002/jhet.5570250427
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Photochemistry of ommochrome pigments.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1243, doi. 10.1002/jhet.5570250438
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The 2,1-benzisothiazolo[2,3- b]-2,1-benzisothiazole system, synthesis and properties.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1095, doi. 10.1002/jhet.5570250409
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Photochemistry of ommochromes and related compounds. Part II.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1251, doi. 10.1002/jhet.5570250440
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Reactions of anthranilamide with isocyanates: A new facile synthesis of 2,3-dihydro-5 H-oxazolo[2,3- b]quinazolin-5-one and 3,4-dihydro-2 H,6 H-[1,3]oxazino[2,3- b]quinazolin-6-one [1].
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1103, doi. 10.1002/jhet.5570250411
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Independent synthesis of 5-hydroxytryptamine-4,7-dione - the neurocytotoxic product of autoxidation of 5,7-dihydroxytryptamine.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1155, doi. 10.1002/jhet.5570250422
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Synthesis of 1-aryl-5-arylazo-3-phenylsulfonylpyrazol-4-ols from 1-bromo-3-phenylsulfonyl-2-propanone.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1219, doi. 10.1002/jhet.5570250433
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An asymmetric isoxazole annulation.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1067, doi. 10.1002/jhet.5570250404
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Derivatives of 3,4-dihydro-β-carboline-3-carboxylic acid from c-terminal tryptophan-containing peptides. Synthesis and properties.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1265, doi. 10.1002/jhet.5570250444
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Reaction of N-(4-pyridylmethyl)-3,5-dimethylbenzamide N-oxide with acidic compounds in the presence of acetic anhydride: Discussion of the mechanism.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1119, doi. 10.1002/jhet.5570250415
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Cyclic homologs of xanthines. I. Imidazo[4,5- e][1,4]diazepine-5,8-diones.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1179, doi. 10.1002/jhet.5570250426
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A new and convenient synthesis of alkyl and aryl pyrimidines.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1237, doi. 10.1002/jhet.5570250437
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Benzimidazole condensed ring systems. 1. Syntheses and biological investigations of some substituted pyrido[1,2- a]benzimidazoles.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1087, doi. 10.1002/jhet.5570250408
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On 6-(thenoyl)-7,8-dichloro-4-oxo-4 H-1-benzopyran-2-carboxylic acid.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1277, doi. 10.1002/jhet.5570250448
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Condensed 1,2,4-triazines. Synthesis and reactions of some condensed benzo[ e] as-triazines.
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- Journal of Heterocyclic Chemistry, 1988, v. 25, n. 4, p. 1139, doi. 10.1002/jhet.5570250419
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