Modular Isoquinoline Synthesis Using Catalytic Enolate Arylation and <i>in Situ</i> Functionalization
作者:Ben S. Pilgrim、Alice E. Gatland、Charlie T. McTernan、Panayiotis A. Procopiou、Timothy J. Donohoe
DOI:10.1021/ol4030309
日期:2013.12.20
bromide, an electrophile, and ammonium chloride were combined in a four-component, three-step, and one-pot coupling procedure to furnish substituted isoquinolines in overall yields of up to 80%. This protocol utilizes the palladium catalyzed α-arylation reaction of an enolate, followed by in situ trapping with an electrophile, and aromatization with ammonium chloride. tert-Butyl cyanoacetate participated
甲基酮、芳基溴化物、亲电子试剂和氯化铵在四组分、三步和一锅偶联程序中组合,以高达 80% 的总产率提供取代的异喹啉。该协议利用钯催化的烯醇的 α-芳基化反应,然后用亲电子试剂原位捕获,并用氯化铵进行芳构化。氰乙酸叔丁酯参与了类似的方案;功能化和脱羧后,3-氨基-4-烷基异喹啉以高收率制备。