A method for synthesis of N-phosphonoalkyliminodiacetic acid or derivatives thereof by: 1) forming a reaction mixture having an acid catalyst, a compound having the general formula R
1
—CH
2
—NX—CH
2
—R
2
and a compound having one or more P—O—P anhydride moieties, to form a compound having the general formula R
1
—CH
2
—N—CH
2
(PO
3
H
2
)—CH
2
—R
2
, its dehydrated forms or their derivatives, wherein the compound of the formula R
1
—CH
2
—NX—CH
2
—R
2
is characterized in that: X is —CH
2
—OH or —CH
2
—COOH; and R
1
and R
2
are independently selected from the group consisting of nitrile, C
1
-C
4
alkyl carboxylate, or are both carbonyl groups linked by a hydrogen substituted nitrogen atom or a C
1
-C
4
-akyl substituted nitrogen atom; the P—O—P anhydride compound is characterized in that the anhydride moieties have one P atom at the oxidation state (+III) and one P atom at the oxidation state (+III) or (+V); and 2) hydrolysing the reaction mixture to form N-phosphonomethyliminodiacetic acid or one of its derivatives.
一种合成N-
磷酸脂肪基
亚乙酸或其衍
生物的方法,包括以下步骤:1)形成反应混合物,其中包括酸性
催化剂、具有一般式R1-
CH2-NX- -R2的化合物和具有一个或多个P-O-P酸酐基团的化合物,以形成具有一般式R1- -N- (PO3H2)- -R2的化合物、其
脱水形式或其衍
生物,其中一般式R1- -NX- -R2的化合物的特点在于:X为- -OH或- -COOH;R1和R2分别选自
氰基、C1-C4烷基
羧酸酯的群或由
氢代替的
氮原子或C1-C4烷基取代的
氮原子连接的两个羰基基团;P-O-P酸酐化合物的特点在于酸酐基团具有一个P原子在
氧化态(+III),一个P原子在
氧化态(+III)或(+V);2)
水解反应混合物,以形成N-
磷酸甲基亚乙酸或其衍
生物之一。