Iron-Catalyzed Diastereoselective Synthesis of Unnatural Chiral Amino Acid Derivatives
作者:Hao Zhang、Haifang Li、Haijun Yang、Hua Fu
DOI:10.1021/acs.orglett.6b01493
日期:2016.7.15
An iron-catalyzed diastereoselective synthesis of unnatural chiral (S)-α-amino acids with γ-quaternary carbon centers has been developed. The protocol uses inexpensive iron salt as the catalyst, readily available 2-phthaloyl acrylamide and alkenes as the starting materials, and phenylsilane as the reductant, and the reactions were performed well in mixed solvent of 1,2-dichloroethane and ethylene glycol
已经开发了铁催化的具有γ-季碳中心的非天然手性(S)-α-氨基酸的非对映选择性合成。该方案以廉价的铁盐为催化剂,易得的2-邻苯二甲酰基丙烯酰胺和烯烃为原料,苯基硅烷为还原剂,反应在室温下于1,2-二氯乙烷和乙二醇的混合溶剂中进行得很好。 。该方法显示出一些优点,包括底物简单且宽,条件温和,非对映选择性高以及后处理步骤容易。