Stereoselective Synthesis of (<i>E</i>)- and (<i>Z</i>)-Fluoroalkenylboronates Using 2-Fluoroalkylideneiodonium Ylides Generated from (2-Fluoro-1-alkenyl)iodonium Salts
作者:Tong Guan、Masanori Yoshida、Shoji Hara
DOI:10.1021/jo701784t
日期:2007.12.1
(E)- and (Z)-(fluoroalkenyl)boronates were prepared stereospecifically by the reaction of 2-fluoroalkylideneiodonium ylide generated from (E)- or (Z)-(2-fluoroalkenyl)iodonium salts with di(p-fluorophenoxy)alkylboranes, followed by transesterification to pinacol esters. The resulting pinacol esters of (fluoroalkenyl)boranes were used for the stereoselective synthesis of trisubstituted fluoroalkenes