Add to ORKG184-186A convenient and facile synthesis of benzopyrano pyrano pyrimidines and benzopyrano pyrano thiopyrimidines starting from 4-hydroxycoumarin and 1,3 -diphenyl barbituric acid/1 ,3-diphenyl-2-thiobarbituric acid in 2% NaOH solution with vinyl acetate is described
Department of Chemistry, Marathwada University, Aurangabad-431 001, India Manuscript received 12 Ja...
A variety of novel [1,2,4]triazolo[1,5-c]pyrimidine-13-ones (4a-f) and (5b-d) could be obtained via ...
Department of Chemistry, University of Calcutta, 92, Acharya Prafulla Chandra Road, Calcutta-700 009...
1263-12674-Hydroxy-2H-2-oxo-3-methylidene-urea[1]benzopyrans 2a-d, 4-hydroxy-2H-2-oxo-3-methylidene...
1957-1959Reaction of 4-oxo-4H-[1]-benzopyran-3-carboxaldehydes with 3-methyl-1-phenylpyrazolin-5(4H...
839-842Various 4-aryl-1, 2, 3, 4-tetrahydro-benzopyrano[4, 3-d] pyrimidine- 2, 5-diones 3a-1 and 4-...
A general and convenient synthesis is described of a number of 2,3-dihydro-4H,5H-pyrano[3,2-c][1]ben...
A general and convenient synthesis is described of a number of 2,3-dihydro-4H,5H-pyrano[3,2-c][1]ben...
7-Hydroxy-8-formyl-4-methylcoumarin when condensed with aeetylglycine in presence of sodium acetate ...
2702-2704A series of new 2-(coumarin-3-yl)-4-(chromon-3-yl)benzopyrano[4,3-b]pyridines (3a-1) have...
<div><p></p><p>A sequential one-pot, two-step reaction for an efficient preparation of 2-(4-hydroxy-...
2901-2904The chalcones of 4-hydroxycoumarins 1a-h on treatment with malononitrile in the presence o...
Pyrimidino[5`,4`-6,5]-,pyridino[3`,2`-6,5]- and pyrrolo[3`,2`-5,6]4H-pyrano-[3,2-c][1]benzopyran-6-o...
1985-1993The arylmethylene of benzopyrane or benzothiopyrane 3,4 have been synthesized and condense...
A variety of novel [1,2,4]triazolo[1,5-c]pyrimidine-13-ones (4a-f) and (5b-d) could be obtained via ...
Department of Chemistry, Marathwada University, Aurangabad-431 001, India Manuscript received 12 Ja...
A variety of novel [1,2,4]triazolo[1,5-c]pyrimidine-13-ones (4a-f) and (5b-d) could be obtained via ...
Department of Chemistry, University of Calcutta, 92, Acharya Prafulla Chandra Road, Calcutta-700 009...
1263-12674-Hydroxy-2H-2-oxo-3-methylidene-urea[1]benzopyrans 2a-d, 4-hydroxy-2H-2-oxo-3-methylidene...
1957-1959Reaction of 4-oxo-4H-[1]-benzopyran-3-carboxaldehydes with 3-methyl-1-phenylpyrazolin-5(4H...
839-842Various 4-aryl-1, 2, 3, 4-tetrahydro-benzopyrano[4, 3-d] pyrimidine- 2, 5-diones 3a-1 and 4-...
A general and convenient synthesis is described of a number of 2,3-dihydro-4H,5H-pyrano[3,2-c][1]ben...
A general and convenient synthesis is described of a number of 2,3-dihydro-4H,5H-pyrano[3,2-c][1]ben...
7-Hydroxy-8-formyl-4-methylcoumarin when condensed with aeetylglycine in presence of sodium acetate ...
2702-2704A series of new 2-(coumarin-3-yl)-4-(chromon-3-yl)benzopyrano[4,3-b]pyridines (3a-1) have...
<div><p></p><p>A sequential one-pot, two-step reaction for an efficient preparation of 2-(4-hydroxy-...
2901-2904The chalcones of 4-hydroxycoumarins 1a-h on treatment with malononitrile in the presence o...
Pyrimidino[5`,4`-6,5]-,pyridino[3`,2`-6,5]- and pyrrolo[3`,2`-5,6]4H-pyrano-[3,2-c][1]benzopyran-6-o...
1985-1993The arylmethylene of benzopyrane or benzothiopyrane 3,4 have been synthesized and condense...
A variety of novel [1,2,4]triazolo[1,5-c]pyrimidine-13-ones (4a-f) and (5b-d) could be obtained via ...
Department of Chemistry, Marathwada University, Aurangabad-431 001, India Manuscript received 12 Ja...
A variety of novel [1,2,4]triazolo[1,5-c]pyrimidine-13-ones (4a-f) and (5b-d) could be obtained via ...
Department of Chemistry, University of Calcutta, 92, Acharya Prafulla Chandra Road, Calcutta-700 009...