An improved synthesis of dichloroalkylphosphonates, chloroalkynes and terminal alkynes via diethyl dichloromethylphosphonate

Article abstract of DOI:10.1055/s-1996-4419

Diethyl 1,1-dichloromethylphosphonate (2) was synthesised in good yield from the reduction of 1,1,1-trichloromethylphosphonate (1) with i-C₃H₇MgCl and subsequent hydrolysis. The reactivity of 2 towards α-alkylation and its utility in the synthesis of chloroalkynes and terminal alkynes was investigated.