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
给我一个Ar,给我一个N!在钯催化下简单易得的丙氨酸的简单衍生物中的甲基化,然后在相同位置进行分子内酰胺化,得到具有广泛芳基取代基的手性α-氨基-β-内酰胺(参见方案; Phth =邻苯二甲酰基) 。α-氨基-β-内酰胺以中等至高收率获得,具有良好的官能团耐受性和非对映选择性。