Catalytic Dehydrogenative β-Alkylation of Amino Acid Schiff Bases with Hydrocarbon
作者:Tetsu Ikeda、Haruka Ochiishi、Mana Yoshida、Ryo Yazaki、Takashi Ohshima
DOI:10.1021/acs.orglett.1c04042
日期:2022.1.14
A synthetic method for the synthesis of a highly congested α,β-dehydroamino acid through the β-C–H bond activation of an amino acid Schiff base is described. Abundant hydrocarbon feedstock could be used as an alkylating reagent to afford an α,β-dehydroamino acid bearing a quaternary carbon at the γ-position with an exclusively (Z)-geometry. Notably, a tetrasubstituted olefin could be constructed from
描述了一种通过氨基酸席夫碱的 β-C-H 键活化合成高度拥挤的 α,β-脱氢氨基酸的合成方法。丰富的烃原料可以用作烷基化试剂,以提供在γ-位带有季碳且具有唯一( Z )-几何形状的α,β-脱氢氨基酸。值得注意的是,四取代烯烃可以由饱和起始材料构建。还证明了合成的α,β-脱氢氨基酸转化为非天然α-氨基酸衍生物。