Enantioselective Palladium-Catalyzed Carbozincation of Cyclopropenes
摘要:
A highly enantioselective palladium-catalyzed carbozincation of cyclopropenes has been developed. The intermediate cyclopropylzinc species, after transmetalation with copper, were trapped with various electrophiles. This one-pot procedure furnished functionalizied cyclopropenes with excellent diastereo- and enantioselectivity.
Enantioselective Palladium-Catalyzed Carbozincation of Cyclopropenes
摘要:
A highly enantioselective palladium-catalyzed carbozincation of cyclopropenes has been developed. The intermediate cyclopropylzinc species, after transmetalation with copper, were trapped with various electrophiles. This one-pot procedure furnished functionalizied cyclopropenes with excellent diastereo- and enantioselectivity.
Rhodium(III)-Catalyzed Enantioselective Benzamidation of Cyclopropenes
作者:Andrey P. Antonchick、Herbert Waldmann、Saad Shaaban、Houhua Li、Christian Merten
DOI:10.1055/s-0040-1706026
日期:2021.7
pharmaceuticals and therefore engaging targets for the development of new methods for their synthesis. Herein the synthesis of enantioenriched cyclopropylamines through catalytic enantioselective C–H functionalization using a chiral RhJasCp complex is reported. The reaction proceeds under mild conditions with high enantiocontrol. This reaction enables access to cyclopropylamines with three contiguous stereocenters
环丙胺是在多种天然产物和药物中发现的特征性结构基序,因此成为开发其合成新方法的目标。本文报道了使用手性Rh Jas Cp配合物通过催化对映选择性CH官能化合成富含对映体的环丙胺。反应在高对映体控制的温和条件下进行。该反应使得能够获得具有源自相应的环丙烯的三个连续的立体中心的环丙胺。