A ring-closing metathesis-mediated route to novel enantiopure conformationally restricted cyclic amino acids
作者:Kim C. M. F. Tjen、Sape S. Kinderman、Henk Hiemstra、Floris P. J. T. Rutjes、Hans E. Schoemaker
DOI:10.1039/b001253j
日期:——
A combination of palladium-catalysed N,O-acetal formation, ruthenium-catalysed ring-closing metathesis and N-sulfonyliminium ion-mediated C–C bond formation constitutes an efficient and versatile route to a set of enantiomerically pure 2,6-disubstituted unsaturated pipecolic acid derivatives.
钯催化的 N,O-缩醛形成、钌催化的闭环复分解和 N-磺酰亚胺离子介导的 C-C 键形成的组合构成了一种有效且通用的途径,可生成一组对映体纯的 2,6-二取代不饱和哌可酸衍生物。