process for the production of phosphorus, phosphon - thionphosphor or thionsphosphonsaeureestern - bezw. - esteramiden.

摘要

1,232,564. Phosphoric acid esters. FARBENFABRIKEN BAYER A.G. 30 Jan., 1969 [2 Feb., 1968], No. 5213/69. Heading C2C. [Also in Division A5] Phosphoric, phosphonic or thiono-phosphoric (-phosphonic) acid esters of the general formula in which R 1 and R 3 are each a straight or branched (possibly halogen substituted) alkoxy radical with 1 to 6 carbon atoms or C 1 -C 4 alkylamino or di-C 1 -C 4 alkylamino group, R 2 and R 4 are each a C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, alkylamino, dialkylamino, alkoxy, haloalkoxy or phenyl radical, and X and Y are oxygen and/or sulphur atoms are prepared by reacting a phosphoric or thionophosphoric (-phosphonic) acid ester halide of the formula in which Hal is a halogen atom with maleic acid hydrazide in the presence of an acid-binding agent. The esters possess insecticidal and acaricidal properties.