Gold-catalyzed substitution reaction with ortho-alkynylbenzoic acid alkyl ester as an efficient alkylating agent
作者:Haruo Aikawa、Sakie Tago、Kazuteru Umetsu、Naomichi Haginiwa、Naoki Asao
DOI:10.1016/j.tet.2008.12.033
日期:2009.2
ortho-Alkynylbenzoic acid alkyl esters behave as alkylating agents in combination with gold catalysts. The reaction with alcohols occurs smoothly in the presence of catalytic amounts of Ph3PAuCl and AgOTf under mild conditions to produce the corresponding ether products in high yields. The protocol is also useful for Friedel–Crafts alkylation and N-alkylation of sulfonamides. The reaction likely proceeds
邻烷基炔基苯甲酸烷基酯与金催化剂一起起烷基化剂的作用。在温和的条件下,在催化量的Ph 3 PAuCl和AgOTf的存在下,与醇的反应平稳进行,从而以高收率生产相应的醚产物。该协议还可用于磺酰胺的Friedel-Crafts烷基化和N-烷基化。该反应可能通过金诱导的离去基团的原位构建以及随后的亲核试剂(如醇,芳族化合物和磺酰胺)的亲核攻击而进行。