Ultrasonically accelerated Knoevenagel condensation reaction at room temperature in distilled water
The condensation reaction of 4-oxo-4H-1-benzopyran-3-carbaldehyde with 3-methyl-1-phenylpyrazolin-5-(4H)-one has been carried out under ultrasonic irradiation at room temperature (R.T.) in distilled water (D/W) as solvent, catalyzed by borate zirconia cat
Shindalkar,Madje,Shingare
p. 1519 - 1521
(2007/10/03)
Synthesis of 3-methyl-4-[(chromon-3-yl) methylene]-1-phenylpyrazolin-5(4H)-ones and their conversion into 2-thio-5-hydroxy-5H-[1]-benzopyrano[4,3-d] pyrimidines
Reaction of 4-oxo-4H-[1]-benzopyran-3-carboxaldehydes with 3-methyl-1-phenylpyrazolin-5(4H)-one in dioxane in the presence of triethyl amine affords 3-methyl-4-[(chromon-3-yl)methylene]- 1-phenylpyrazolin-5(4H)-ones 3a-k. Condensation of 3 with thiourea i
Karale,Gill,Khan, Mohib,Chavan,Mane,Shingare
p. 1957 - 1959
(2007/10/03)
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