Ketene Chemistry 2.<sup>1</sup>A General Procedure for the Synthesis of 2-Alkoxycyclopropane-carboxylic Esters and Acids Starting from Aldehydes and Ketene
作者:Preben Bødstrup Rasmussen、Søren Bøwadt
DOI:10.1055/s-1989-27165
日期:——
Alkyl 3-alkoxy-4-bromocarboxylates are prepared by the Lewis acid-catalyzed reaction of α-bromoaldehyde acetals with ketene. Base-catalyzed cyclization of these intermediates affords 2-alkoxycyclopropanecarboxylic esters.
通过Lewis酸催化下的反应,将α-溴醛缩二醇与烯酮反应,制备出烷基3-烷氧基-4-溴羧酸酯。这些中间体在碱催化下发生环化反应,生成2-烷氧基环丙烷羧酸酯。