Syntheses of Some 3-[1′(1′H)-Substituent-pyrazol-5′-yl] benzo[5,6]coumarins  

作　　者：E-LDEEN Ibrahim Mohey AL-WAKEEL El-Sayed Ismail El-MAWLA Ahmed Gad 

出　　处：《Chinese Journal of Chemistry》2002年第7期670-675,共6页中国化学（英文版）

摘　　要：3-[1′ (1′ H)-Substituent-pyrazol-5′-yl] benzo[5, 6] coumarins and3-(1′,2′-oxazol-5′-yl)benzo[5,6]coumarin were prepared via condensation of3-(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 halidcs, olefiniccompounds or acid chlorides are described.3-[1′ (1′ H)-Substituent-pyrazol-5′-yl] benzo[5, 6] coumarins and3-(1′,2′-oxazol-5′-yl)benzo[5,6]coumarin were prepared via condensation of3-(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 halidcs, olefiniccompounds or acid chlorides are described.

关 键 词：heterocycle synthesis pyrazol-5′-ylbenzo [5  6] coumarin alkylation atpyrazole nitrogen 

分 类 号：TQ655[化学工程—精细化工]