作者:José Enrique Gómez、Wusheng Guo、Silvia Gaspa、Arjan W. Kleij
DOI:10.1002/anie.201709511
日期:2017.11.20
Open sesame: The first general asymmetric synthesis of γ,γ-disubstituted γ-amino acids by copper-catalyzed ring opening of nonstrained lactones with amines is reported. This catalytic system allows the synthesis of a series of highly functionalized γ-amino acids, featuring quaternary stereocenters, with excellent enantiomeric ratios of up to 98:2 and yields of up to 98 %.
开孔芝麻:报道了通过铜催化非应变内酯与胺的开环反应,首次普遍不对称合成γ,γ-二取代的γ-氨基酸。该催化系统可以合成具有季立体中心的一系列高度官能化的γ-氨基酸,对映体比率高达98:2,产率高达98%。