new ester of pyrophosphoric acid. tetramethylique dithiol, process of preparation and its application as an intermediate product in the synthesis of pesticides

摘要

1349228 Tetramethyl dithiolopyrophosphate; O.S-dimethylthiolophosphoramidate BAYER AG 15 Nov 1972 [16 Nov 1971] 52772/72 Heading C2P The novel compound tetramethyldithiolopyrophosphate may be prepared by reacting an alkali metal or ammonium salt of O,S-dimethylthiolophosphoric acid with phosgene. O,S-Dimethyl thiolophosphoramidate may be prepared by reacting tetramethyl dithiolopyrophosphate, with or without isolation from the solution in which it is prepared, with ammonia in an inert organic non-aqueous solvent.