申请人:MONSANTO TECHNOLOGY LLC
公开号:US10364262B2
公开(公告)日:2019-07-30
A method for synthesis of N-phosphonoalkyliminodiacetic acid or derivatives thereof by forming a reaction mixture having an acid catalyst, a compound of the following general formula R1—CH2—NX—CH2—R2 and a compound having one or more P—O—P anhydride moieties to form a compound having a formula R1—CH2—N(—CH2PO3R32)(—CH2—R2) wherein in R1—CH2—NX—CH2—R2: X is —CH2—OH or —CH2—COOH; R1 and R2 are independently selected from the group consisting of nitrile, C1-C4 alkyl carboxylate, and carboxylic acid for when X is —CH2—OH, or R1 and R2 are both carbonyl groups linked by a hydrogen substituted nitrogen atom or a C1-C4-alkyl substituted nitrogen atom; and R3 is H, an alkyl group, or an aryl group; the anhydride moieties in the P—O—P anhydride compound have one P atom at the oxidation state (+III) and one P atom at the oxidation state (+III) or (+V); and 2) hydrolyzing the mixture to form N-phosphonomethyliminodiacetic acid or one of its derivatives.
一种合成N-膦酰基亚烷基二醋酸或其衍生物的方法,通过形成一种反应混合物,该混合物具有酸催化剂、下通式R1-CH2-NX-CH2-R2的化合物和具有一个或多个P-O-P酸酐分子的化合物,以形成具有式R1-CH2-N(-CH2PO3R32)(-CH2-R2)的化合物,其中在R1-CH2-NX-CH2-R2中,X是-CH2-OH或-CH2-COOH;R1和R2独立地选自由腈、C1-C4烷基羧酸盐和羧酸组成的组:X为-CH2-OH或-CH2-COOH;当X为-CH2-OH时,R1和R2独立地选自腈、C1-C4烷基羧酸酯和羧酸组成的组,或者R1和R2都是由氢取代的氮原子或C1-C4烷基取代的氮原子连接的羰基;和 R3 是 H、烷基或芳基;P-O-P 酸酐化合物中的酸酐分子有一个 P 原子处于氧化态 (+III),一个 P 原子处于氧化态 (+III) 或 (+V);和 2)水解混合物以形成 N-膦酰甲基亚氨基二乙酸或其衍生物之一。