Synthesis of homochiral dibenzo[b,f]phosphepin 5-oxides using a double ortho-lithiation strategy
作者:Stuart Warren、Paul Wyatt
DOI:10.1016/0957-4166(96)00099-7
日期:1996.4
Enantiomerically pure chiral seven membered phosphorus heterocycles - phosphepins - have been prepared by McMurry coupling, Sharpless dihydroxylation, ortho-lithiation and reaction with PhPCl(2) or PrPCl2. Studies of the ortho-lithiation and of hydrolysis of phosphepinium salts are included. Copyright (C) 1996 Elsevier Science Ltd