Abstract Bis (chloromethyl) phosphinic chloride reacts with trimethylsilyl methylcarbamate in benzene in the presence of a base to give trimethylsilyl bis (chloromethyl) phosphinate. The same reaction performed without a solvent and in the absence of a base yields trimethylsilyl bis (chloromethyl) phosphinate and bis (chloromethyl) phosphinic anhydride. Reaction of bis (chloromethyl) phosphinic chloride with trimethylsilyl diethylcarbamate yields N, N- ...