摘要:
This invention is directed to an improved process for the preparation of N-(phosphonomethyl)glycine (i.e., “glyphosate”), a salt of N-(phosphonomethyl)glycine, or an ester of N-(phosphonomethyl)glycine. The process comprises combining an N-substituted N-(phosphonomethyl)glycine reactant with oxygen in the presence of a noble metal catalyst. The N-substituted N-(phosphonomethyl)glycine reactant has formula (V): wherein R1 and R2 are independently selected from the group consisting of hydrogen, halogen, —PO3R12R131, —SO3R14, —NO2, hydrocarbyl, and substituted hydrocarbyl other than —CO2R15; and R7, R8, R9, R12, R13, R14, and R15 are independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl, and an agronomically acceptable cation.
摘要翻译:本发明涉及制备N-(膦酰基甲基)甘氨酸(即“草甘膦”),N-(膦酰基甲基)甘氨酸的盐或N-(膦酰基甲基)甘氨酸的酯的改进方法。 该方法包括在贵金属催化剂存在下将N-取代的N-(膦酰基甲基)甘氨酸反应物与氧组合。 N-取代的N-(膦酰基甲基)甘氨酸反应物具有式(V):其中R 1和R 2独立地选自氢,卤素,-PO 3 R 12 R 13 1,-SO 3 R 14,-NO 2,烃基和取代的烃基, CO2R15; 并且R 7,R 8,R 9,R 12,R 13,R 14和R 15独立地选自氢,烃基,取代的烃基和农艺学上可接受的阳离子。
摘要:
A method for dehalogenation of aqueous compositions contaminated with halogenated aliphatic and alicyclic hydrocarbons is provided which comprises contacting an aqueous composition with an amount of a mixed metal composition effective to dehalogenate the halogenated aliphatic and alicyclic hydrocarbons at a temperature of at least 10° C., wherein the mixed metal composition comprises a second metal selected from the group consisting of copper, cobalt, nickel, molybdenum, bismuth, tin, lead, silver, chromium, palladium, platinum and gold deposited on an anchor metal consisting essentially of iron metal and wherein the amount of second metal in the mixed metal composition is an amount effective to increase the dehalogenation rate compared to use of iron alone, and the surface of the mixed metal composition has exposed iron metal.