Alkylation des ions carboxylates par les sels de sulfonium: influence des sels de cuivre
作者:B. Badet、M. Julia、M. Ramirez-Munoz、C.A. Sarrazin
DOI:10.1016/s0040-4020(01)91553-4
日期:1983.1
Sulfonium salts are extremely powerful alkylating agents, particularly in the two-phase technique both solid-liquid and liquid-liquid). Alkylation of carboxylate salts by sulfonium salts does not show very large dependence on ratio of reactivities of various groups attached to the sulfur and mixtures of esters are often obtained. In the presence of copper(I) salts, there is a strong acceleration of
salts盐是非常强大的烷基化剂,特别是在两相技术(固液和液液)中。sulf盐将羧酸盐烷基化并没有很大程度地依赖于与硫连接的各种基团的反应性比率,并且经常获得酯的混合物。在铜(I)盐的存在下,烯丙基sulf盐的反应有很强的加速作用,并且对不饱和残基的选择变得非常有选择性。在不存在铜盐的情况下,可通过α-位非常有效地反应的异戊烯基through盐仅在存在催化量的溴化铜时仅生成叔酯。