Chloroethane → Ethylene

Participants

Reaction Conditions

Reaction Steps

Ethylene bis[(diethyl phosphono)acetate] was prepared by a modification of the procedure described in U.S. Pat. No. 3,943,200 employing a shorter reaction time and lower final temperature. To ethylene bis(chloroacetate) (107.5 g, 0.5 mol) under nitrogen at 150° C. triethyl phosphite (166.0 g, 1.0 mol) was slowly added over 60 minutes with stirring, and the reaction mixture was maintained at 150° C. for a further 3 hours. Continuous evolution of ethyl chloride occurred throughout the reaction. Removal of volatiles under vacuum gave ethylene bis [(diethyl phosphono) acetates as a straw-coloured liquid (197.5 g, 95%), identified by NMR.

Provenance & Evidence