BY FW MITCHELL, JR.,'AND HJ LUCAS The reaction of trialkyl phosphites with alkyl halides in the Arbuzov reaction2 is essentially a phosphonation reaction] since one product is an ester of a phosphonic acid. The reaction has been studied fairly extensively with acyclic and has been extended recently to cyclic trialkyl phosphites derived from ethanediol and 3- methoxy-1, 2-propanedi01.~ Whereas ethyl ethylene phosphite (2-ethoxy-1, 3, 2- ...