作者:Barry B. Snider、Rachel B. Smith
DOI:10.1016/s0040-4020(01)01054-7
日期:2002.1
Oxidative cyclization of unsaturated Meldrum's acids can be carried out at temperatures as low as −30°C. The rate-determining step is cyclization of the enolate to the alkene (11 to 14 and 15) rather than enolization, which is the rate-determining step with dimethyl 4-pentenylmalonate (1). While cyclization of 1 gives mainly cyclopentanes, cyclization of Meldrum's acids provides a versatile route to
不饱和麦德鲁姆酸的氧化环化反应可在低至-30°C的温度下进行。速率确定步骤是烯醇盐环化成烯烃(11至14和15)而不是烯化,这是用4-戊烯基丙二酸二甲酯(1)确定速率的步骤。虽然1的环化主要产生环戊烷,但Meldrum酸的环化提供了通往环己烯的通用途径。