Abstract Diphenyl (trimethylsilyl) phosphine reacts with alkoxy (alkyl) acetylenes to give mixtures of addition products,(2-alkoxy-2-trimethylsilylalkenyl) diphenylphosphines and (2- alkoxyalkenyl) diphenylphosphines. The reaction is sensitive to the solvent; in MeCN, it gives only nonsilylated products.(1-Alkoxyethenyl) diphenylphosphines were obtained as the main products upon the reaction of Ph 2 PSiMe 3 with terminal alkoxyalkynes, ...
