Piperazine-1,4-diacetic acid

Diazacvclohexane-1.4-diacetic acid (piperazine-1.4-diacetic acid)... [Pg.61]

Several cyclic glyphosate analogs related to this series were described previously as intermediates to prepare glyphosate. These include various N-phosphonomethylhydantoins and diketopiperazines. A more extended glyphosate piperazine analog 106 has also been prepared firom the Mannich reaction of ethylenediamine-lV,lV -diacetic acid (65). [Pg.34]

Piperazine-N,N -diacetic acid dithioamide refluxed 3 hrs. with p-methoxyphen-acyl bromide in abs. ethanol containing 2-3 drops of pyridine, and the product shaken 10 min. with 1 1 aq. NHg -> N,N -di- (4-p-methoxyphenyl-2-thiazolyl-methyl)piperazine. Y 91%. F. e. s. H. A. Braun, H. Kiihne, and B. Prijs, Helv. 43, 659 (1960). [Pg.552]

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