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    • 6. 发明授权
    • Phosphinidynetrimethanol triacetate
    • 磷酸二苯乙醇三乙酸酯
    • US3845107A
    • 1974-10-29
    • US23136072
    • 1972-03-02
    • US AGRICULTURE
    • LANOUX SELLZEY SDRAKE GREEVES W
    • C07F9/50D06M13/282D06M13/285C07C67/00
    • D06M13/285C07F9/5004D06M13/282
    • 1. A PROCESS FOR PREPARING PHOSPHINIDYNETRIMETHANOL TRIACETATE, WHICH PROCESS COMPRISES; (A) REACTING ACETIC ANHYDRIDE AND TETRAKIS(HYDROXYMETHYL)PHOSPHONIUM CHLORIDE IN PYRIDINE AT ROOM TEMPERATURE BY DISSOLVING 303 GRAMS (1.59 MOLES) OF SAID TETRAKIS(hYDROXYMETHYL)PHOOSPONIUM CHLORIDE IN 1800 MILLILITERS OF PYRIDINE AT ROOM TEMPERATURE, AND SLOWLY ADDING ABOUT 727 GRAMS (7.13 MOLES) OF ACETIC ANHYDRIDE WHILE STIRRING THE REACTION MIXTURE, TO MAINTAIN A TEMPERATURE OF THE MIXTURE AT BELOW 40*C; (B) CONTINUING THE REACTION UNTIL ALL OF THE TETRAKIS(HYDROXYMETHYL)PHOSPHONIUM CHLORIDE IS CONSUMED, THE SAID ACETIC ANHYDRIDE BEING PRESENT IN EXCESS; (C) REMOVING THE PYRIDINE BY DISTILLATION UNDER VACCUM TO OBTAIN AN OILY RESIDUE; (D) WASHING THE OILY DISTILLATION RESIDUE WITH WATER TO REMOVE UNREACTED STARTING MATERIALS AND UNDESIRED WATER-SOLUBLE PRODUCTS THEREBY OBTAINING A BROWN OIL WHICH SEPARATES; (D) DRYING THE SEPRATED BROWN OIL WITH ANHYDROUS SODIUM SULFATE OR SUITABLE SUBSTITUTE DRYING AGENT THEREFOR; AND (F) DISTILLING THE PRODUCT FROM (E) UNDER VACUUM TO OBTAIN PHOSPHINIDYNETRIMETHANOL TRIACETATE, A COLORLESS PRODUCT.