Cobalt-Catalyzed C(sp<sup>2</sup>)–H Carbonylation of Amino Acids Using Picolinamide as a Traceless Directing Group
作者:Lukass Lukasevics、Aleksandrs Cizikovs、Liene Grigorjeva
DOI:10.1021/acs.orglett.1c00660
日期:2021.4.2
we report an efficient protocol for the C(sp2)–H carbonylation of amino acid derivatives based on an inexpensive cobalt(II) salt catalyst. Carbonylation was accomplished using picolinamide as a traceless directing group, CO (1 atm) as the carbonyl source, and Co(dpm)2 as the catalyst. A broad range of phenylalanine derivatives bearing diverse functional groups were tolerated. Moreover, the method can
在此,我们报告了一种基于廉价钴 (II) 盐催化剂的氨基酸衍生物C(sp 2 )-H 羰基化的有效方案。羰基化是使用吡啶甲酰胺作为无痕导向基团、CO (1 atm) 作为羰基源和 Co(dpm) 2作为催化剂来完成的。广泛的带有不同官能团的苯丙氨酸衍生物是可以耐受的。此外,该方法可成功应用于短肽的 C(sp 2 )-H 羰基化,从而允许进行肽后期羰基化。