Cyclic phosphorous acid esters and process
    2.
    发明授权
    Cyclic phosphorous acid esters and process 失效
    循环磷酸酯和工艺

    公开(公告)号:US3681477A

    公开(公告)日:1972-08-01

    申请号:US3681477D

    申请日:1968-11-01

    Applicant: RUHRCHEMIE AG

    CPC classification number: C07F9/28

    Abstract: WHEREIN R1 represents an aliphatic, cycloaliphatic, heterocyclic or aromatic radical linked to the nucleus via an oxygen atom, R2 and R3 each represent aliphatic, cycloaliphatic, heterocyclic or aromatic radicals, which may be linked to the nucleus via a bridge atom A selected from the group of oxygen, sulfur, nitrogen, and phosphorus, n is an integer having a value of 0 or 1 if the bridge atom is oxygen and if the bridge atom is sulfur, nitrogen or phosphorus n has a value of 0, 1 or 2, and R4, R5 and R6 each stand for a carboxylic acid ester group.

    Novel organic phosphorus compounds containing at least one phosphorus atom, which may be present in the trivalent state, at least two carboxylic acid ester groups and a phosphorus to carbon double linkage prepared by reacting a malonic acid diester with a compound of trivalent phosphorus having directly linked to the phosphorus atom at least two halogen atoms capable of reacting with activated hydrogen atoms. (The reaction malonic acid diethyl ester with phenyl phosphine dichloride and the resulting reaction product are not within the scope of the instant invention). The novel organic phosphorus compounds of the invention are useful as pest controlling agents, as catalyst components and for forming complexes with transition metals and their compounds. The disclosed compounds include derivatives of 1,2diphosphacyclopentene-(5)-one-(4) having the formula:

    Abstract translation: 含有至少一个磷原子的新型有机磷化合物,其可以以三价态存在,至少两个羧酸酯基和磷碳双键,其通过使丙二酸二酯与直接连接的三价磷化合物 磷原子至少两个能够与活化氢原子反应的卤素原子。 (反应丙二酸二乙酯与苯基二氯化膦和所得反应产物不在本发明的范围内)。

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