ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

The isomerism of insecticidal organic thiophosphate and selenophosphate

V. Tichý

Vyskumny ustav agrochem. tech., Bratislava

Abstract: The mechanism of the isomerism of org. esters of O,O-diethyl-O-p-nitrophenylthiophosphate (I), O,O-dimethyl-O-p-nitrophenylthiophosphate (II), and of O,O-diethyl-O-(2-ethylmercaptoethyl)thiophosphate is described. By heating pure I or II, S-ethyl- or S-methyl-O,O-bis(p-nitrophenyl)thiophosphate is formed. By the condensation at higher temp. of (EtO)₂POCl, or (MeO)₂POCl with p-nitrothiophenolate, Et or Me p-nitrophenyl sulfide is formed. The prepn. and properties of O,O,O-trialkylselenophosphates, O-alkyl-bis(dialkylamino)selenophosphates, O,O,Se-trialkyl(aryl)selenophosphates, and acyl derivs. of O,O-dialkylselenophosphoric acid are described.

Full paper in Portable Document Format: 91a3.pdf (in Slovak)

Chemical Papers 9 (1) 3–20 (1955)