A convenient and inexpensive synthesis of labelled methylmalonic and propionic acids: application to the synthesis of methyl-d3-malonic and of propionic-3,3,3-d3 acids
作者:Pietro Allevi、Alessandra Longo、Mario Anastasia
DOI:10.1002/(sici)1099-1344(199911)42:11<1085::aid-jlcr264>3.0.co;2-4
日期:1999.11
A synthetic route for obtaining highly pure methylmalonic and propionic acids labelled at the methyl groups is validated by the preparation of methyl-d3-malonic and propionic-3,3,3-d3 acids. The synthesis involves the alkylation of the diethyl allylmalonate with iodomethane-d3, deallylation of the resulting diethyl allylmethyl-d3-malonate by treatment with (η2-propene)Ti(O-i-Pr)2 and hydrolysis. Decarboxylation
通过制备甲基-d3-丙二酸和丙酸-3,3,3-d3 酸,验证了获得在甲基上标记的高纯度甲基丙二酸和丙酸的合成路线。合成包括烯丙基丙二酸二乙酯与碘甲烷-d3 的烷基化,所得烯丙基甲基-d3-丙二酸二乙酯通过用(η2-丙烯)Ti(Oi-Pr)2 处理和水解脱烯丙基化。所得甲基-d3-丙二酸脱羧得到丙-3,3,3-d3酸。版权所有 © 1999 John Wiley & Sons, Ltd.