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Syntheses of Some 3‐[1′ (1′ H )‐Substituent‐pyrazol‐5′‐yl] benzo [5,6]coumarins
Author(s) -
ElDeen Ibrahim Mohey,
AlWakeel ElSayed Ismail,
ElMawla Ahmed Gad
Publication year - 2002
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20020200709
Subject(s) - chemistry , coumarin , substituent , hydroxylamine , hydrazine (antidepressant) , alkyl , medicinal chemistry , organic chemistry , chromatography
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.