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L-aspartic acid bis(trimethylsilyl) ester: a convenient starting material for the acylation of L-aspartic acid.
Tetrahedron ( IF 2.1 ) Pub Date : 1992 , DOI: 10.1016/0040-4020(92)85013-5
Ana M. Castano , Antonio M. Echavarren

Reaction of L-aspartic acid with excess of bis(trimethylsilyl)amine under reflux provides optically pure L-aspartic acid bis(trimethylsilyl) ester in quantitative yield. This silyl ester reacts with a variety of acylating reagens in tetrahydrofuran to give N-protected aspartic acids and dipeptides in good yields without racemization.

中文翻译:

L-天冬氨酸双(三甲基甲硅烷基)酯:L-天冬氨酸酰化的方便原料。

L-天冬氨酸与过量的双(三甲基甲硅烷基)胺的反应在回流下以定量收率提供了光学纯的L-天冬氨酸双(三甲基甲硅烷基)酯。该甲硅烷基酯与四氢呋喃中的各种酰化反应物反应,以高收率得到N-保护的天冬氨酸和二肽,而没有外消旋作用。
更新日期:2017-01-31
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