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Title: A facile one step synthesis of some 3-trifluoromethyl-7H-6(6/8, 6,8-disubstituted- 3-coumarino)-s-triazolo[3,4-b] [1,3,4]thiadiazines and 3-(2-phenyl hydrazinothiazolyl) coumarins
Authors: Kumar, V Ravi
Rao, V Rajeswar
Issue Date: Dec-2001
Publisher: NISCAIR-CSIR, India
Abstract: 3-Trifluoromethyl-7H-6(6 or 8, or 6,8-disubstituted-3-coumarino)-s-triazolo [3,4-b][1 ,3,4] thiadiazines 3 have been prepared from simple condensation of appropriate 3-trifluoromethyl-4-amino-5-mercapto-1,2,4-triazole 2 with various 3(2-bromoacetyl)coumarins in anhyd. ethanol and dimethyl formamide. Some 3-(2-phenyl hydrazino-4-thiazolyl) courmarins 5 have also been prepared by the condensation of 3-(2-bromoacetyl) coumarins 1 and N4-phenyl thiosemicarbazide 4 in anhyd. ethanol and dimethyl formamide.
Page(s): 1226-1229
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.40B(12) December 2001]

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