Di(adamant-1-yl)- and di(adamant-2-yl)thiophosphoric acids and their triethylammonium salts in alkylation reactions

By reaction of di(adamant-1-yl) and di(adamant-2-yl) phosphites with sulfur in the presence of triethylamine diadamantylthiophosphoric acid triethylammonium salts were obtained. The latter by the action of hydrochloric acid were converted into free thiophosphoric acids and by the reaction of alkylation into the respective triesters which have thionic structure. Applicability in such reactions also of triethylammonium salts of diadamantyldithiophosphoric acids was demonstrated.