Indirect electrochemical α-methoxylation of -acyl and -carboalkoxy α-amino acid esters and application as cationic glycine equivalents
作者:Klaus-Dieter Ginzel、Peter Brungs、Eberhard Steckhan
DOI:10.1016/s0040-4020(01)80034-x
日期:1989.1
Indirect electrochemical methoxylation of -acyl and -carboalkoxy α-amino acid esters in α-position to nitrogen is possible, if chloride is used as mediator. The course of the reaction depends upon the protecting group as well as upon the amino acid side-chain. Increased electron withdrawing effects of the protecting group are accelerating the reaction. On the other hand aliphatic side-chains are diminishing
如果使用氯化物作为介体,则可以在α位上将-酰基和-羰基烷氧基α-氨基酸酯间接电化学甲氧基化为氮。反应过程取决于保护基以及氨基酸侧链。保护基团的吸电子作用增强,促进了反应。另一方面,脂族侧链降低了反应性。高氯离子浓度提高了电流产量,令人惊讶地强。