Preparation of vinylphosphines by means of free radical addition of diphenylphosphine to alkynes and allenes
作者:Terence N. Mitchell、Kerstin Heesche
DOI:10.1016/0022-328x(91)86141-c
日期:1991.5
readily to alkynes and allenes under free radical conditions. Alkynes normally give E-vinylphosphines as the primary (kinetic) product, but Z-vinylphosphines are the main products isolated. Allenes generally give complex product mixtures in which the predominant components are vinyl phosphines formed via addition of the Ph2P. radical to the central carbon atom of the allene fragment.
在自由基条件下,二苯膦很容易加成炔烃和丙二烯。炔烃通常产生E-乙烯基膦作为主要(动力学)产物,但Z-乙烯基膦是分离的主要产物。丙二烯通常产生复杂的产物混合物,其中主要成分是通过添加Ph 2 P形成的乙烯基膦。烯丙基片段中心碳原子的基团。