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Syntheses of Some 3-[1′ (1′ H)-Substituent-pyrazol-5′-yl] benzo [5,6]coumarins
Abstract
3-[1′ (1′ H)-Substituent-pyrazol-5′-yl] benzo [5,6] coumarins and 3-(1′,2′-oxazol-5′-yl)benzo[5,6]coumarin were prepared via condensation of 3-(2′-formyl-1′-chlorovinyl) benzo [5,6] coumarin with hydrazine derivatives or hydroxylamine. Reaction of 3-[1′(1′ H)-pyrazol-5′-yl] benzo [5,6] coumarin with alkyl halides, olefinic compounds or acid chlorides are described.
