Synthesis of Tetrasubstituted Olefins by Pd-Catalyzed Addition of Arylboronic Acids to Internal Alkynes
作者:Chengxiang Zhou、Richard C. Larock
DOI:10.1021/ol047759q
日期:2005.1.1
[Reaction: see text] Tetrasubstituted olefins are readily prepared by the Pd-catalyzed cis addition of two aryl groups from an arylboronic acid to opposite ends of the triple bond of internal alkynes. The synthesis proceeds under very mild reaction conditions and tolerates a wide variety of functional groups, including alcohol, aldehyde, ester, TMS, and acetal groups.
[反应:见正文]通过从芳基硼酸到内部炔烃三键相反端的Pd催化顺式加成两个芳基,可以容易地制备四取代的烯烃。合成在非常温和的反应条件下进行,并且可以耐受多种官能团,包括醇,醛,酯,TMS和缩醛基。