Dependence of product on catalyst in the transition-metal-catalysed decomposition of ethyl 2-allyl-4-diazoacetoacetate
作者:Shlomo Bien、Arie Gillon、Sol Kohen
DOI:10.1039/p19760000489
日期:——
formation of the epimeric ethyl 2-oxobicyclo[3.1.0]hexane-3-carboxylates (2a and b) and 4-allyl-5-ethoxyfuran-3(2H)-one (3) in the thermal decomposition of ethyl2-allyl-4-diazoacetoacetate has been observed. The decomposition could be controlled by use of transition metal catalysts: highly selective formation of (2) or (3) could be achieved by appropriate choice of catalyst.
New oxidative dearomatization procedures leading to Spiro beta-lactams and oxindoles were developed. By a variation of the oxidative reaction conditions, the usefulness of phenolic amides, derived from 4-aminophenol, in the synthesis of structurally different types of molecules was demonstrated.