Synthesis of hydroxyderivatives of 4-methylcoumarin

SI Zav'yalov, OV Dorofeeva, EE Rumyantseva…

文献索引：Zav'yalov; Dorofeeva; Rumyantseva; Zavozin Pharmaceutical Chemistry Journal, 1996 , vol. 30, # 3 p. 204 - 205

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被引用次数: 1

摘要

Coumarin V and some other hydroxyderivatives of 4-methylcoumarin are usually obtained by the Pechman reaction, involving polycondensation of two-and three-atomic phenols with acetoacetic ester (AE) in the presence of H2SO4 [I, 5]. A disadvantage of this method is the comparatively low and unstable yield of the target coumarins V and VIII. In this work we propose new efficient two-and threecomponent systems for for the Pechman reaction with ...