[EN] PYRROLIDINONE CARBOXAMIDE DERIVATIVES AS CHEMERIN-R ( CHEMR23 ) MODULATORS [FR] DÉRIVÉS DE PYRROLIDINONE CARBOXAMIDE UTILISÉS EN TANT QUE MODULATEURS DU RÉCEPTEUR DE LA CHÉMÉRINE (CHEMR23)
Catalyst-controlled doubly enantioconvergent coupling of racemic alkyl nucleophiles and electrophiles
作者:Haohua Huo、Bradley J. Gorsline、Gregory C. Fu
DOI:10.1126/science.aaz3855
日期:2020.1.31
stereochemistry when beginning with readily available racemic starting materials (racemicproducts). Here, we report a chiral nickel catalyst that couples racemic electrophiles (propargylic halides) with racemic nucleophiles (β-zincated amides) to form carbon-carbon bonds in doubly stereoconvergent processes, affording a single stereoisomer of the product from two stereochemical mixtures of reactants.
The invention provides a compound of formula I:
or a pharmaceutically acceptable salt thereof, wherein the variables X, Y
1
-Y
5
, R
1
, R
2
, R
3
, R
4
, and Het have the meaning as described herein, and compositions containing such compounds and methods for using such compounds and compositions.
α,β-Unsaturated amides play a vital role in natural products, pharmaceuticals, organic synthesis, and functional materials. Herein, we disclosed a regio- and stereoselective hydroaminocarbonylation of unsymmetrical internal alkynes via palladium catalysis to synthesize α,β-unsaturated amides. This protocol features excellent regio- and exclusive (E)-stereoselectivity, high atom and step-economy, broad
α,β-不饱和酰胺在天然产物、药物、有机合成和功能材料中发挥着至关重要的作用。在此,我们公开了通过钯催化对不对称内炔烃进行区域选择性和立体选择性氢化氨基羰基化合成 α,β-不饱和酰胺。该协议具有出色的区域和排他 ( E ) 立体选择性、高原子和阶梯经济性、广泛的底物范围和官能团耐受性。