SU299163A1 - Method of obtaining ammonium salts of b-alkoxyvinylpyrothiophosphonic acid amides - Google Patents

Description

This invention relates to a process for the preparation of NEW compounds - ammonium salts of amides of | 3-alkoxyvinyl pyrothiophosphonic acids of the general formula

SS

ROCH CHP CHO OWN

HNCjH.CH,

where R is alkyl.

 The reaction of thiophosphonic acid anhydrides with amines is known, and salts of thiophosphonic acid amides are obtained.

The proposed method is based on the reaction of p-alkoxyvinylthiophosphonic acid anhydrides with amines, thus obtaining ammonium salts of ampoules (3-alkoxyvinylpyrothiophosphonic acids. The reaction is carried out in an organic solvent when heated. The resulting new compounds can be used as complexing agents for synthesis synthesis phosphorus.

acid. To 3 g (0.02 g-mol) of p-ethoxyvinyl thiophosphonic anhydride. In 30 ml of dry chloroform, protected from air moisture, 4.16 g (0.04 g-mol) of p-toluidine are added. The reaction mixture is stirred at the boiling point of the solvent for 5 hours. Treated with ether, dried In a vacuum desiccator, 4.2 g (83% yield) of the α-tolylammonium salt of p-ethoxyvinylpyrothiophosphonic acid l-tolylamide acid are obtained which are well soluble

In water, alcohol, chloroform and insoluble

In the air, benzene, acetone; m.p. 112-114 ° C.

Found,%: N 5.25, 5.31; S 12.75; 12.81;

R 12.52, 12.31.

С22Пз2О4Ы252Р2.

Calculated,%: N 5.5; S 12.59; R 12.2.

Claims (1)

Invention Formula The method of producing ammonium salts of amides of p-alkoxyvinylpyrothiophosphonic acids, characterized in that p-alkoxyvinylthiophosphonic anhydride is reacted with an amine in the medium organic solvent, for example chloroform, followed by isolation of the target product by known methods.