Works matching IS 0022152X AND DT 1990 AND VI 27 AND IP 5
Results: 63
Reaction of biguanides and related compounds. XVI. Synthesis of s-triazinones and fused s-triazinones by carbonylation of biguanides and related compounds with diethyl azodicarboxylate.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1213, doi. 10.1002/jhet.5570270510
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Synthesis of novel cyclic sulfone dihydropyridines facilitated by a selective ethyl diazoacetate ring expansion.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1453, doi. 10.1002/jhet.5570270550
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1,3-Dipolar cycloaddition reactions of vinylcephalosporins with diazoalkanes.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1281, doi. 10.1002/jhet.5570270521
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Synthesis and antibacterial activity of 2,3-dehydroofloxacin.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1509, doi. 10.1002/jhet.5570270561
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Diheterocyclic compounds from dithiocarbamates and derivatives thereof. V. 4,4′-dioxo-2,2′-dithioxo(dioxo)-6,6′-biquinazolines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1351, doi. 10.1002/jhet.5570270532
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Synthesis of benzimidazo-substituted 3-quinolinecarboxylic acids as antibacterial agents.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1177, doi. 10.1002/jhet.5570270503
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Synthesis of 1,2,3-thiadiazole-5-carbaldehydes and their conversion into 6aδ<sup>4</sup>-Thia-1,2,5,6-tetraazapentalenes.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1415, doi. 10.1002/jhet.5570270543
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Synthesis and absorption spectra of 2-substituted 5,8-dimethoxy-4 H-1-benzothiopyran-4-one 1,1-dioxides.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1241, doi. 10.1002/jhet.5570270514
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Proton-ionizable crown compounds. 19. The synthesis of chiral dialkyl-substituted triazolo-18-crown-6 macrocycles.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1477, doi. 10.1002/jhet.5570270554
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A series of novel acyclic nucleosides. II.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1307, doi. 10.1002/jhet.5570270525
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Metallation of diazines II. First metallation of pyridazine, metallation of 2,4-dichloropyrimidine.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1377, doi. 10.1002/jhet.5570270536
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Arene imine derivatives of nitrogen heterocycles: 1a,9b-dihydrobenz[ h]-azirino[ f]quinoline, 1a,9b-dihydrobenz[ f]azirino[ h]quinoline and 1a,9b-dihydroazirino[ f][1,10]phenanthroline.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1197, doi. 10.1002/jhet.5570270507
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A new synthetic approach to the C-D ring portion of streptonigrin analogues.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1437, doi. 10.1002/jhet.5570270547
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Synthesis and characterization of macrocyclic ligands containing benzene and/or pyridine rings and their nickel(II), copper(II) and zinc(II) complexes.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1265, doi. 10.1002/jhet.5570270518
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Electron impact mass spectrometry and collisional spectroscopy in the structural characterization of 4-benzylidene and 4-phenylethylidene-2-phenyl-5(4 H)-oxazolones.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1495, doi. 10.1002/jhet.5570270558
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Synthesis of methyl-substituted lariat ethers containing a 13-crown-4 ring.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1337, doi. 10.1002/jhet.5570270529
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Oxidative halogenation of substituted pyrroles with cu(II). Part II. Bromination of some ethyl 3-pyrrolecarboxylates and corresponding acids.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1277, doi. 10.1002/jhet.5570270520
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8-Bromo-6-alkylamino-2-trifluoromethyl-9 H-purines with in vitro activity against influenza a virus.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1505, doi. 10.1002/jhet.5570270560
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Diheterocyclic compounds from dithiocarbamates and derivatives thereof. IV.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1345, doi. 10.1002/jhet.5570270531
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The acid-catalyzed rearrangement of 1- N-allylindolines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1173, doi. 10.1002/jhet.5570270502
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Synthesis of acyclic nucleoside analogs of 6-substituted 2-aminopurines and 2-amino-8-azapurines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1409, doi. 10.1002/jhet.5570270542
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Synthesis of large macrocyclic tetraaza compounds with a methylene backbone: Cyclo[-NH- (CH<sub>2</sub>) <sub>n</sub>-]<sub>4</sub>, (n = 6, 7, 8, 9 and 10). The formation of 28-, 32-, 36-, 40- and 44-membered rings.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1233, doi. 10.1002/jhet.5570270513
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Reaction of electron rich heterocycles with electrophiles. Formylation of indoles via thiomethylation.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1473, doi. 10.1002/jhet.5570270553
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Differentiation of isomeric 1-, 3- and 7-deazaadenosines by electron ionization mass spectrometry.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1297, doi. 10.1002/jhet.5570270524
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Double 1,3-dipolar cycloadditions of meso-ionic heterocycles with N-phenylmaleimide.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1519, doi. 10.1002/jhet.5570270564
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Synthesis of new arylbenzofurodiazepin-6-ones.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1369, doi. 10.1002/jhet.5570270535
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Tautomerism in some quinaldyl sulfones.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1433, doi. 10.1002/jhet.5570270546
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Bromination of sydnones. III.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1259, doi. 10.1002/jhet.5570270517
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Non-steroidal antiinflammatory agents. VI. Synthesis of 10-oxo-5 H-pyrrolo[1,2- b]isoquinoline-3-acetic Acid, a conformationally restricted analogue of tolmetin.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1489, doi. 10.1002/jhet.5570270557
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Polycondensed heterocycles. IV. synthesis of 1,4-dioxo-2,3,3a,4-tetrahydro-1 H-pyrrolo[2,1- c][1,4]benzothiazine.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1329, doi. 10.1002/jhet.5570270528
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Synthesis of 2-chloro-4,6-di(heteroaryl)pyrimidines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1393, doi. 10.1002/jhet.5570270539
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Diheterocyclic compounds from dithiocarbamates and derivatives thereof. III.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1341, doi. 10.1002/jhet.5570270530
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A New synthesis of 4,5,6,7-tetrahydrofuro[2,3- c]pyridines and furo[2,3- c]pyrrolidines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1169, doi. 10.1002/jhet.5570270501
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Isoindole derivatives from o-diacylbenzenes and aromatic amines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1407, doi. 10.1002/jhet.5570270541
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Synthesis of some novel polyoxygenated quinolines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1227, doi. 10.1002/jhet.5570270512
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Studies on quinazolinones. 2.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1467, doi. 10.1002/jhet.5570270552
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An unusual HgCl rearrangement in electron impact mass spectrometry of some halomercurioalkyl derivatives.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1293, doi. 10.1002/jhet.5570270523
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S,N-heterocycles 2.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1517, doi. 10.1002/jhet.5570270563
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Synthesis of dl-guinesines and related compounds.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1361, doi. 10.1002/jhet.5570270534
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Formation of oxadiazolo[4,5- a]indolines via addition reactions of cycloalkano[ b]indoles with nitrile oxides. Crystal structure of an adduct.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1185, doi. 10.1002/jhet.5570270505
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1,3-Dipolar cycloaddition reactions of 1,3,4-oxadiazin-6-ones with nitrile oxides.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1425, doi. 10.1002/jhet.5570270545
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On triazoles. XXI.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1249, doi. 10.1002/jhet.5570270516
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2 H-1,2,4-benzothiadiazine 1,1-dioxides 2.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1485, doi. 10.1002/jhet.5570270556
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Substituent effects on the photocycloaddition reactions of phenol to benzonitriles.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1323, doi. 10.1002/jhet.5570270527
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Stereoselective synthesis and stereochemical determination of 2,5-dialkylpyrrolidines and 2,6-dialkylpiperidines.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1387, doi. 10.1002/jhet.5570270538
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Oxidative halogenation of substituted pyrroles with cu(II). Part I. Bromination of some 3-acetylpyrroles.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1209, doi. 10.1002/jhet.5570270509
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Some transformations of 3-amino-4-alkoxycarbonyl-6-hydroxy-2 H-1-benzopyran-2-ones. The synthesis of [1] benzopyrano[3,4- d]-[1,3]oxazine and [1] benzopyrano[3,4- d]pyrimidine derivatives.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1447, doi. 10.1002/jhet.5570270549
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Réactivité des esters de la carboxyméthylène-1 hydroxy-4 méthyl-6 pyridone-2 vis-à-vis des aldéhydes aromatiques.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1401, doi. 10.1002/jhet.5570270540
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Synthesis of quinoline derivatives using ketene dithioacetals.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1217, doi. 10.1002/jhet.5570270511
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Synthesis, <sup>1</sup>H, <sup>13</sup>C-NMR and mass spectral study of aryloxyquinuclidinium salts.
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- Journal of Heterocyclic Chemistry, 1990, v. 27, n. 5, p. 1457, doi. 10.1002/jhet.5570270551
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