Synthesis of non-natural cyclic amino acids from available unsaturated tertiary amines
作者:I. D. Titanyuk、I. P. Beletskaya
DOI:10.1134/s1070428010090022
日期:2010.9
New approach is developed to the synthesis of cyclic amino acids derivatives. Unsaturated tertiary amines react with ethyl diazoacetate under the catalysis by copper catalyst Cu(F3acac)2 leading to the formation of products of [2,3]-sigmatropic rearrangement which via the metathesis of double bonds undergo a ring closure. The subsequent hydrogenation of compounds obtained furnished esters of 6- and
开发了合成环状氨基酸衍生物的新方法。在铜催化剂Cu(F 3 acac)2的催化下,不饱和叔胺与重氮乙酸乙酯反应,导致形成[2,3]-σ重排的产物,该产物通过双键的复分解而闭环。随后获得的化合物的氢化提供了6元和7元环状α-氨基酸的酯。除外消旋外,还获得旋光化合物,特别是(R)-和(S)-哌酸的酯。