Stable dithioxophosphorane, diselenoxophosphorane, and selenoxophosphine bearing 2,4-Di-t-butyl- 6-(dimethylamino)phenyl group as a new sterically protecting auxiliary
作者:Masaaki Yoshifuji、Masaru Hirano、Kozo Toyota
DOI:10.1016/s0040-4039(00)77487-9
日期:1993.2
2,4-Di-t-butyl-6-(dimethylamino)phenylphosphonous dichloride was prepared from 2-bromo-3,5-di-t- butyl,-N,N-dimethylaniline. The dichloride was then converted to the corresponding diphosphene. The reaction of the diphosphene with sulfur or selenium in triethylamine afforded 2,4-di-t-butyl-6-(dimethylamino)- phenyldithioxophosphorane or diselenoxophosphorane ,respectively, as a very stable compound
由2-溴-3,5-二叔丁基,-N,N-二甲基苯胺制备2,4-二叔丁基-6-(二甲基氨基)苯基二氯化磷。然后将二氯化物转化为相应的二膦。将二膦与硫或硒在三乙胺中反应,分别得到非常稳定的2,4-二叔丁基-6-(二甲氨基)-苯基二硫代氧膦或二硒氧代膦烷,将二硒氧代膦烷与六甲基亚磷酸三酰胺脱硒,得到硒代硒代山pine碱。