1957-1959Reaction of 4-oxo-4H-[1]-benzopyran-3-carboxaldehydes with 3-methyl-1-phenylpyrazolin-5(4H)-one in dioxane in the presence of triethylamine affords 3-methyl-4- [(chromon-3-yl)methylene]-phenylpyrazolin-5(4H)-ones 3a-k. Condensation of 3 with thiourea in alcoholic KOH under reflux yields 2-thio-5-hydroxy-5H[1]-benzopyrano[4,3-d]pyrimidines 6a-h
Department of Chemistry, University of Jammu, Jammu-180 006, Jammu & Kashmir, India Manuscript rece...
Organic Chemistry Laboratory, Department of Biochemistry, Calcutta University, Calcutta-700 019 Man...
2165-21691-Alkyl-6-aryl-3-n-propyl-5-thioxo/oxo-4,5,6,7-tetrahydro-1H -pyrazolo[4,3-d] pyrimidin-7-...
360-365Oxidative cyclization of 1 with DMSO-I₂ yields 2-(1-phenyl-3-(thiophen-2-yl)-1H- pyrazol-4-yl...
839-842Various 4-aryl-1, 2, 3, 4-tetrahydro-benzopyrano[4, 3-d] pyrimidine- 2, 5-diones 3a-1 and 4-...
456-4603-Cinnamoyl-4-hydroxy-6-methyl-2-pyrones (chalcone analogs of DHA) on condensation with phen...
3-Methyl-4-aryl-1-phenyl-1H -pyrazolo[3,4-d]-pyrimidine-6-thiols( 11)were synthesised by the raction...
1263-12674-Hydroxy-2H-2-oxo-3-methylidene-urea[1]benzopyrans 2a-d, 4-hydroxy-2H-2-oxo-3-methylidene...
A method for the synthesis of 4,5-disubstituted pyrano[3,4-b]pyrrol-7-(1H)-ones has been developed i...
1985-1993The arylmethylene of benzopyrane or benzothiopyrane 3,4 have been synthesized and condense...
184-186A convenient and facile synthesis of benzopyrano pyrano pyrimidines and benzopyrano pyrano t...
A method for the synthesis of 4,5-disubstituted pyrano[3,4-b]pyrrol-7-(1H)-ones has been developed i...
885-8895-Methyl-2,4-dihydro-3H-pyrazol-3-one reacts with isatin 1a,b in ethanol to give a solid prod...
<div><p></p><p>The synthesis of 3-(2-(5-(benzylideneamino)-3-phenyl-1H-pyrazol-1-yl)thiazol-4-yl)-4-...
Several chroman-4-ones were prepared by the pyrrolidine catalysed reaction of 2'-hydroxyacetophenone...
Department of Chemistry, University of Jammu, Jammu-180 006, Jammu & Kashmir, India Manuscript rece...
Organic Chemistry Laboratory, Department of Biochemistry, Calcutta University, Calcutta-700 019 Man...
2165-21691-Alkyl-6-aryl-3-n-propyl-5-thioxo/oxo-4,5,6,7-tetrahydro-1H -pyrazolo[4,3-d] pyrimidin-7-...
360-365Oxidative cyclization of 1 with DMSO-I₂ yields 2-(1-phenyl-3-(thiophen-2-yl)-1H- pyrazol-4-yl...
839-842Various 4-aryl-1, 2, 3, 4-tetrahydro-benzopyrano[4, 3-d] pyrimidine- 2, 5-diones 3a-1 and 4-...
456-4603-Cinnamoyl-4-hydroxy-6-methyl-2-pyrones (chalcone analogs of DHA) on condensation with phen...
3-Methyl-4-aryl-1-phenyl-1H -pyrazolo[3,4-d]-pyrimidine-6-thiols( 11)were synthesised by the raction...
1263-12674-Hydroxy-2H-2-oxo-3-methylidene-urea[1]benzopyrans 2a-d, 4-hydroxy-2H-2-oxo-3-methylidene...
A method for the synthesis of 4,5-disubstituted pyrano[3,4-b]pyrrol-7-(1H)-ones has been developed i...
1985-1993The arylmethylene of benzopyrane or benzothiopyrane 3,4 have been synthesized and condense...
184-186A convenient and facile synthesis of benzopyrano pyrano pyrimidines and benzopyrano pyrano t...
A method for the synthesis of 4,5-disubstituted pyrano[3,4-b]pyrrol-7-(1H)-ones has been developed i...
885-8895-Methyl-2,4-dihydro-3H-pyrazol-3-one reacts with isatin 1a,b in ethanol to give a solid prod...
<div><p></p><p>The synthesis of 3-(2-(5-(benzylideneamino)-3-phenyl-1H-pyrazol-1-yl)thiazol-4-yl)-4-...
Several chroman-4-ones were prepared by the pyrrolidine catalysed reaction of 2'-hydroxyacetophenone...
Department of Chemistry, University of Jammu, Jammu-180 006, Jammu & Kashmir, India Manuscript rece...
Organic Chemistry Laboratory, Department of Biochemistry, Calcutta University, Calcutta-700 019 Man...
2165-21691-Alkyl-6-aryl-3-n-propyl-5-thioxo/oxo-4,5,6,7-tetrahydro-1H -pyrazolo[4,3-d] pyrimidin-7-...