Stereoselective Synthesis of Chiral α-Amino-β-Lactams through Palladium(II)-Catalyzed Sequential Monoarylation/Amidation of C(sp<sup>3</sup>)H Bonds
作者:Qi Zhang、Kai Chen、Weihao Rao、Yuejun Zhang、Fa-Jie Chen、Bing-Feng Shi
DOI:10.1002/anie.201306625
日期:2013.12.16
give Me an N! Arylation of the methyl group in a simple derivative of readily available alanine under palladium catalysis was followed by intramolecular amidation at the same position to give chiral α‐amino‐β‐lactams with a wide range of aryl substituents (see scheme; Phth=phthaloyl). The α‐amino‐β‐lactams were obtained in moderate to high yields with good functional‐group tolerance and high diastereoselectivity
Palladium-catalyzed sequential monoarylation/amidation of C(sp<sup>3</sup>)–H bonds: stereoselective synthesis of α-amino-β-lactams and anti-α,β-diamino acid
作者:Peng-Xiang Ling、Sheng-Long Fang、Xue-Song Yin、Qi Zhang、Kai Chen、Bing-Feng Shi
DOI:10.1039/c7cc02426f
日期:——
sequential monoarylation/amidation of C(sp3)–H bonds of alanine enabled by a removable 5-methoxyquinolin-8-amine (MQ) auxiliary is described. This process is highly efficient and compatible with a variety of functional groups, providing a general and practical access to various α-amino-β-lactams. The synthetic potential of this protocol is further demonstrated by the stereoselectivesynthesis of orthogonally