Synthesis of δ-Lactone and Amino Acid Frameworks Utilizing the Umpoled Reactivity of β,γ-Alkenyl α-Iminoester
作者:Mami Kawanishi、Isao Mizota、Kana Aratake、Hirotaka Tanaka、Kenta Nakahama、Makoto Shimizu
DOI:10.1246/bcsj.20160402
日期:2017.4.15
N-alkylation reaction of β,γ-alkenyl α-iminoesters was studied, and various tandem reactions were found utilizing this N-alkylation. A useful synthesis of δ-lactones and dienamines was developed by tandem N-alkylation/vinylogous aldol-type reaction. The synthesis of α-quaternary alkenyl amino esters was also developed via the tandem N-alkylation/bromination/C-alkylation. These methods using β,γ-alkenyl
研究了β,γ-烯基α-亚氨基酯的umpolung N-烷基化反应,并发现了利用这种N-烷基化的各种串联反应。δ-内酯和二烯胺的有用合成是通过串联 N-烷基化/乙烯醇醛型反应开发的。α-季链烯基氨基酯的合成也是通过串联的 N-烷基化/溴化/C-烷基化进行的。这些使用 β,γ-烯基 α-亚氨基酯的方法在操作上简单且有用,并且表现出广泛的底物通用性。