Synthesis of esters of phosphonic acids, containing heterocyclic radicals - Communication 9. Reaction of benzylidenerhodanines with trialkyl phosphites and dialkylphosphorous acids

Abstract

1. Trialkyl phosphites react with benzylidenerhodanine to give N-alkylbenzylidenerhodanines and dialkyl phosphites. 2. Dialkyl phosphites also alkylate benzylidenerhodanines and form addition products at the idene bond of both N-alkylated and unalkylated benzylidenerhodanines. 3. Trialkyl phosphites do not react with N-alkylbenzylidenerhodanines, either under the reaction conditions of trialkyl phosphites with unsubstituted benzylidenerhodanines or under more drastic conditions. © 1968 Consultants Bureau.