Works matching IS 0022152X AND DT 1990 AND VI 27 AND IP 3
Results: 64
Reactions of 3-isopropenyltropolones with bromine and N-bromosuccinimide: Formation of 8 H-cyclohepta[ b]furan-8-one derivatives.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 583, doi. 10.1002/jhet.5570270320
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Synthesis of fluoromethyl, difluoromethyl and trifluoromethyl analogues of pyrazosulfuron-ethyl as herbicides.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 807, doi. 10.1002/jhet.5570270360
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The synthesis and transformations of 3-ethoxycarbonyl-2-isothiocyanatopyridine. Pyrido[2,3- d]pyrimidines and some azolopyrido[2,3- d]pyrimidines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 643, doi. 10.1002/jhet.5570270331
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Synthesis and properties of conformationally locked 1,3-bisalkyl-7-deazaxanthine 2′-deoxy-d-ribofuranosides.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 479, doi. 10.1002/jhet.5570270302
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Synthesis of new derivatives of β-carboline-hydantoin.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 703, doi. 10.1002/jhet.5570270342
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Nitration studies of naphtho[2,3- c][1,2,5]thiadiazole.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 549, doi. 10.1002/jhet.5570270313
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Synthesis of substituted dihydrobenzo[ f]pyrimido[4,5- b]-quinolines as tetracyclic 5-deaza nonclassical folates.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 765, doi. 10.1002/jhet.5570270353
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Novel bicyclo[2.2.2]lactones from a facile condensation of dibenzoylethylene with arylacetonitriles.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 599, doi. 10.1002/jhet.5570270324
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A facile synthesis of novel 1,2-diazepino[3,4- b]quinoxalines by a 1,3-dipolar cycloaddition reaction.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 819, doi. 10.1002/jhet.5570270364
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Lithiation of 1-benzylimidazole. A hypothesis on the regioselectivity of the electrophilic attacks on the lithiated species.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 673, doi. 10.1002/jhet.5570270335
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New synthetic method for 4-hydroxyproline.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 507, doi. 10.1002/jhet.5570270306
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Mesoionic 1,2,4-triazolo[4,3- c]quinazolines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 723, doi. 10.1002/jhet.5570270346
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Synthesis of thiocarbonyl and heterocyclic compounds from 2-methylene-1,3-dithietanes.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 567, doi. 10.1002/jhet.5570270317
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Syntheses of 6-Amino-1-(β-D-ribofuranosyl)-1 H-pyrazolo[3,4- d]-1,3-oxazin-4-one, an isostere of oxanosine, and the guanosine analog 6-amino-1-(β-d-ribofuranosyl)-1 H-pyrazolo[3,4- d]pyrimidin-4(5 H)-one via ring closure of pyrazole-5-thioureido intermediates
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 787, doi. 10.1002/jhet.5570270357
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Polycyclic N-hetero compounds. XXXII.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 759, doi. 10.1002/jhet.5570270352
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Sels de N-alcoxyquinoléinium et de N-alcoxyisoquinoléinium porteurs d'une fonction ester dans leur chaine alcoxyle: Synthèse et réactivité vis-a-vis des ions cyanure.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 627, doi. 10.1002/jhet.5570270328
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Furopyridines. X.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 637, doi. 10.1002/jhet.5570270330
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Pyridazines with heteroatom substituents in positions 3 and 5. 6.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 471, doi. 10.1002/jhet.5570270301
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Intramolecular cyclization of 4-acetyl-2,2-diethoxycarbonyl-2,3-dihydro-1-(2-nitrobenzoyl)pyrrole by catalytic reduction.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 699, doi. 10.1002/jhet.5570270341
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The synthesis of hexahydro-6 H-dibenzo[ b,d]pyrans: Derivatives of 9-Nor-9β-hydroxyhexahydrocannabinol.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 535, doi. 10.1002/jhet.5570270312
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A facile synthesis of novel triazoloquinoxahnones and triazinoquinoxalinones.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 691, doi. 10.1002/jhet.5570270339
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Synthesis of linear polyquaternary salts derived from 4,4′-Bipyridine.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 595, doi. 10.1002/jhet.5570270323
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3-(2-Pyrrolidinyl)-2,4-furandione analogs.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 815, doi. 10.1002/jhet.5570270363
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Murexide reaction of caffeine with hydrogen peroxide and hydrochloric acid. II.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 667, doi. 10.1002/jhet.5570270334
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Studies on pyrazines. 19.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 503, doi. 10.1002/jhet.5570270305
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Pyrimidines. 65.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 717, doi. 10.1002/jhet.5570270345
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A novel preparation of thiazolo[5,4- c]pyridines and the synthesis of some imidazo[4,5- c]pyridines and oxazolo[4,5- c]pyridines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 563, doi. 10.1002/jhet.5570270316
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Reactivity of 4-amino-6,7-diphenyl-8 H-pyrazino[2,3- c]-1,2,6-thiadiazine 2,2-dioxide towards methylating agents.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 785, doi. 10.1002/jhet.5570270356
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Synthesis of protopine. A novel conversion of the protoberberine alkaloid stylopine to a tetrahydrodibenz[ c,g]azecine derivative.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 623, doi. 10.1002/jhet.5570270327
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Synthesis of 1-aryl-1,2,3-triazole-4,5-dimethanol-4,5-bis(isopropylcarbamates) as potential antineoplastic agents.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 687, doi. 10.1002/jhet.5570270338
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A simple synthesis of novel 2-pyridones from chalcones.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 523, doi. 10.1002/jhet.5570270309
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Reaction of 1,3,4-oxadiazolones with free L- α-amino acids: A facile synthesis of novel 3,5-disubstituted hydantoins.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 739, doi. 10.1002/jhet.5570270349
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Synthesis of cns potentially active bicyclic and tricyclic derivatives of pyrazolo[1,5- a][1,3]diazepines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 695, doi. 10.1002/jhet.5570270340
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A novel synthetic route to 1,2-dimethyl-5-phenyl-1 H-imidazo[4,5- b]pyridin-7-ol.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 531, doi. 10.1002/jhet.5570270311
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The crystal and molecular structure of 5- N-methyl-β-d-arabinofurano[1′,2′:4,5]oxazolo- S-triazine-4,6-dione: Molecular modeling studies on the pattern of alkylation of β-D-arabinofurano[1′,2′:4,5]oxazolo- s-triazin-4-one-6-thione
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 753, doi. 10.1002/jhet.5570270351
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Synthesis and reactions of 3-thioxo[1,2,4]-triazino[3,2- b]quinazolin-10-ones.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 591, doi. 10.1002/jhet.5570270322
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An easy two-step synthesis of 1-imidazolylmethyl esters.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 813, doi. 10.1002/jhet.5570270362
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2-Methylpyridinium salts as 1,4-dinucleophiles. IV. Westphal condensation with 2-alkyl-1-aminoazinium substrates.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 661, doi. 10.1002/jhet.5570270333
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A convenient synthesis of 3-aryl-1,2,4-triazolo[4,3- c]quinazolines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 497, doi. 10.1002/jhet.5570270304
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Pyrolysis of azidopyrazines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 711, doi. 10.1002/jhet.5570270344
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Synthesis of 6-substituted-4,5-dihydro-3(2 H)-pyridazinones.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 557, doi. 10.1002/jhet.5570270315
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Synthesis of pyrazolo[3,4- d]pyrimidine derivatives using ketene dithioacetals.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 775, doi. 10.1002/jhet.5570270355
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Synthesis and NMR (<sup>1</sup>H and <sup>13</sup>C) Studies of azole analogs of diclofurime.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 615, doi. 10.1002/jhet.5570270326
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Synthesis of 1-acyl-5-pyrazolones and pyrrolidino[2,3- c]pyrazol-3-ones.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 683, doi. 10.1002/jhet.5570270337
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Synthesis of 4-[3-(1 H)-indolyl]-2-[ N-guanidinomethyl]thiazole dihydrochloride.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 519, doi. 10.1002/jhet.5570270308
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The reaction of 1-( N-phenacylidene)amino-1,2,3-triazoles with diphenylnitrilimine.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 735, doi. 10.1002/jhet.5570270348
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A convenient synthesis of pyridazine-3,4-dicarboxylic acid by a hetero diels-alder reaction.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 579, doi. 10.1002/jhet.5570270319
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An activated trifluoromethyl group as a new synthon for 4,5-dihydro-1 H-imidazole and 1,4,5,6-tetrahydropyrimidine systems.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 803, doi. 10.1002/jhet.5570270359
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Theoretical reaction indices for dibenz[ a,h]acridine.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 527, doi. 10.1002/jhet.5570270310
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Synthesis of certain 6-alkylthio-2,2′-anhydro-5-azauridines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 3, p. 743, doi. 10.1002/jhet.5570270350
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