Stable dithioxophosphorane, diselenoxophosphorane, and selenoxophosphine bearing 2,4-di-t-butyl-6-(dimethylamino)phenyl group as a new sterically protecting auxiliary

Article abstract of DOI:10.1016/S0040-4039(00)77487-9

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 triet