"Phosphonoethylation" and diene-synthesis reactions with vinylphosphonic esters

1. Dibutyl vinylphosphonate has been synthesized. 2. It has been shown that vinylphosphonic esters combine at the double bond with hydrogen sulfide and with mercaptans, yielding the corresponding dialkyl 2-mercaptoethylphosphonates and dialkyl 2 alkylmercaptoethylphosphonates respectively. 3. It has been shown that vinylphosphonic esters maybe used as dienophiles in diene-synthesis reactions. A method has been developed for the preparation of esters of homologs and derivatives of cyclohexenylphosphonic acid. © 1953 Consultants Bureau