Works matching IS 0022152X AND DT 1998 AND VI 35 AND IP 6
Results: 56
Synthesis of 7-benzoxazol-2-yl and 7-benzothiazol-2-yl-6-fluoroquinolones.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1301, doi. 10.1002/jhet.5570350610
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A convenient synthesis of 2-amino-4 H-1,3,4-oxadiazino[5,6- b]-quinoxaline derivatives.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1515, doi. 10.1002/jhet.5570350650
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Synthesis of 2-styrylthiazolo[4,5- b]quinoxaline based fluorescent dyes.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1353, doi. 10.1002/jhet.5570350621
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Reactions of 3-acetyltropolone with benzaldehydes in trimethyl orthoformate in the presence of perchloric acid: Synthesis of 2-aryl-4-methoxy-9-oxocyclohepta[ b]pyrylium perchlorates.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1413, doi. 10.1002/jhet.5570350632
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Reaction of 1-chloromethyl-4,5-dichloropyridazin-6-one.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1257, doi. 10.1002/jhet.5570350603
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Synthesis of novel pyrindine derivatives from a facile reaction of 2,5-bisarylidenecyclopentanone and malononitrile.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1473, doi. 10.1002/jhet.5570350643
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Syntheses and properties of chiral pentahomothiazacalix[3]arenes.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1317, doi. 10.1002/jhet.5570350614
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A facile one-pot synthesis of 2,5-disubstituted oxazoles using iodobenzene diacetate.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1533, doi. 10.1002/jhet.5570350654
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Synthesis of indolizidinediones annelated to a furan ring.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1371, doi. 10.1002/jhet.5570350625
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Synthetic and spectroscopic study of 5-amino-2-acyl-1,2,4-thiadiazolin-3-ones.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1435, doi. 10.1002/jhet.5570350636
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Transformation of 4-(1-dimethylaminoethylidene)-2-phenyl-5(4 H)-oxazolone into methyl 2-benzoylamino-3-oxobutanoate. The synthesis of 1-substituted 4-benzoylamino-3-methyl-5(2 H)-pyrazolones.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1281, doi. 10.1002/jhet.5570350607
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Benzofuran systems. Regioselective bromination and some other reactions of 1-(3-benzofuranyl)-2-phenylethanones.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1501, doi. 10.1002/jhet.5570350647
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Reactions of 2-aryl-4-methoxy-9-oxocyclohepta[ b]pyrylium perchlorates with hydroxylamine and hydrazines.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1339, doi. 10.1002/jhet.5570350618
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Synthesis of 4-aryl-2,3,6,7-tetrahydro-1 H-pyrimido[4,5- b][1,4]-diazepin-6-ones from 4,5-diamino-1 H-pyrimidin-6-ones and 1-aryl-3-(dimethylamino)-1-propanones.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1397, doi. 10.1002/jhet.5570350629
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Reductive metallation of 6-methyl-2,3-diphenylquinoxaline. Synthesis of 1,4-dihydro-1,4-diazine derivatives.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1349, doi. 10.1002/jhet.5570350620
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Unusual behavior of pyrazolo[1,2- a]pyrazoles in fast atom bombardment (fab) and frit-fast atom bombardment (Frit-FAB) mass spectrometry. Influence of the matrix.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1405, doi. 10.1002/jhet.5570350631
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Furopyridines. XXVIII.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1249, doi. 10.1002/jhet.5570350602
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Computational investigation of the suitability of heterocyclic aromatic compounds with two heteroatoms in the 1 and 3 ring positions as dienes for the diels alder reaction.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1467, doi. 10.1002/jhet.5570350642
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First synthesis of 5,6-dihydro-4 H-furo[3,2- f]pyrrolo- [1,2- a][1,4]diazepines.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1313, doi. 10.1002/jhet.5570350613
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Urea as leaving group in the synthesis of 3-( tert-butyl)perhydro-1,5,3-dithiazepine.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1531, doi. 10.1002/jhet.5570350653
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Cryptolepinone vs. Hydroxycryptolepine: Resolution of a question of substituent functionality and double bond isomerization.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1365, doi. 10.1002/jhet.5570350624
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Synthesis and reduction of thieno[2′,3′(3′,2′ or 3′,4′):5,6]-azocino[2,1- a]isoindole-7, 13-diones.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1429, doi. 10.1002/jhet.5570350635
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The synthesis of ethyl 2-[(2,2-dibenzoyl)ethenyl]amino-3-dimethyl-aminopropenoate and its application to the synthesis of fused 3-aminopyran-2-ones and 3-aminoazolo- and -azinopyrimidin-4(4 H)-ones.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1275, doi. 10.1002/jhet.5570350606
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Synthesis of pyrazolecarbonylaminopyridinecarboxamides as herbicides.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1493, doi. 10.1002/jhet.5570350646
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A new tautomeric zwitterion form of 2-acylamino-4 H-1,3,4-oxadiazino[5,6- b]quinoxalines in solution.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1333, doi. 10.1002/jhet.5570350617
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A convenient synthesis of (z)-3-(α-alkoxycarbonyl-α-cyanomethylene)-2-oxo-1,2,3,4-tetrahydroquinoxalines and related compounds.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1389, doi. 10.1002/jhet.5570350628
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2,2-Dioxo-1 H-thieno[3,4- c][1,2]thiazines. Synthesis and some reactions of a new heterocycle.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1449, doi. 10.1002/jhet.5570350639
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Chemoselective synthesis of 1-alkyl-4-(4-amino-2,6-dichlorophenoxy)-5-halopyridazin-6-ones.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1401, doi. 10.1002/jhet.5570350630
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Furopyridines. XXVII.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1237, doi. 10.1002/jhet.5570350601
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α,ω-Bis(4-substituted-3-quinolinylthio)alkanes from reactions of thioquinanthrene with alkoxides.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1461, doi. 10.1002/jhet.5570350641
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Synthesis of 6-cyanopyrido[2,3- d]pyrimidinones in the reaction of 6-amino-4-pyrimidinones with arylidene derivatives of malonodinitrile.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1309, doi. 10.1002/jhet.5570350612
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Transformations of methyl 2-(2,2-disubstituted-ethenyl)amino-3-dimethylaminopropenoates. The synthesis of methyl 1-heteroaryl-1 H-imidazole-4-carboxylates.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1527, doi. 10.1002/jhet.5570350652
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Stereoselective photo[4+2]cycloadditions of 2-pyrone-5-carboxylates with maleimides in the solid state and in solution.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1361, doi. 10.1002/jhet.5570350623
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Pyridazines. XV. Synthesis of 6-aryl-5-amino-3(2 H)-pyridazinones as potential platelet aggregation inhibitors.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1421, doi. 10.1002/jhet.5570350634
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Definitive structural assignment of condensation products from anthranilamide and 3-amino-2-carbamoylthiophene with ketones. Formation of tetrahydroquinazolinones and their thiophene isosteres.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1269, doi. 10.1002/jhet.5570350605
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Studies on the synthesis of some dihydropyridine derivatives possessing calcium antagonistic activity.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1485, doi. 10.1002/jhet.5570350645
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Synthesis of the bi-heterocyclic parent ring system 1,2,4-triazolo[4,3- b][1,2,4,5]tetrazine and some 3,6-disubstituted derivatives.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1329, doi. 10.1002/jhet.5570350616
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Manganese triacetate oxidation of phenolic schiffs bases: Synthesis of 2-arylbenzoxazoles.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1539, doi. 10.1002/jhet.5570350656
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Synthesis of new proton-ionizable and neutral macrocyclic, macrobicyclic and macrotricyclic crown compounds containing dibenzo-16-crown-5 units.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1381, doi. 10.1002/jhet.5570350627
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Total synthesis of 5-demethylellipticine.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1445, doi. 10.1002/jhet.5570350638
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Synthesis of 7 H-tetrazolo[1,5- c]pyrrolo[3,2- e]pyrimidines and their reductive ring cleavage to 4-aminopyrrolo[2,3- d]pyrimidines.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1295, doi. 10.1002/jhet.5570350609
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Steric promotion of cyclization reactions: Substituent effect studies in the furan intramolecular diels-alder reaction.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1509, doi. 10.1002/jhet.5570350649
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3-Benzoyl-3,4-dihydro-2 H,5 H-1-benzopyrano[4,3- b]pyran-5-ones by condensation of 4-hydroxycoumarins with enone mannich bases.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1455, doi. 10.1002/jhet.5570350640
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Furopyridines. XXV.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1305, doi. 10.1002/jhet.5570350611
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Studies on the chemistry of thienoannelated o,n- and s,n-containing heterocycles. 16.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1521, doi. 10.1002/jhet.5570350651
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The preparation of 4-oxo- N-aryl-4 H-1-benzopyran-2-acetamides by the condensation/cyclization of trilithiated acetoacetanilides with lithiated methyl salicylates.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1357, doi. 10.1002/jhet.5570350622
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Synthesis of perimidine and fused perimidine derivatives from reaction of 1,8-naphthalenediamine with an iminoisocoumarin.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1417, doi. 10.1002/jhet.5570350633
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Alkylation and arylation of pyrazoles under solvent-free conditions: Conventional heating versus microwave irradiation.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1263, doi. 10.1002/jhet.5570350604
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Synthesis of isoindolo[1,3]benzoxazine derivatives through intramolecular arylation of N-acyliminium ions.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1477, doi. 10.1002/jhet.5570350644
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Synthesis and spectroscopic properties of 4-(4-carboxyphenyl)-3,3′,5′-trimethyl-2,2′-pyrromethen-1,1′-BF<sub>2</sub> complex and its methyl ester.
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- Journal of Heterocyclic Chemistry, 1998, v. 35, n. 6, p. 1325, doi. 10.1002/jhet.5570350615
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