Phosphine‐Catalyzed β,γ‐Umpolung Domino Reaction of Allenic Esters: Facile Synthesis of Tetrahydrobenzofuranones Bearing a Chiral Tetrasubstituted Stereogenic Carbon Center
作者:Shinobu Takizawa、Kenta Kishi、Yasushi Yoshida、Steffen Mader、Fernando Arteaga Arteaga、Shoukou Lee、Manabu Hoshino、Magnus Rueping、Makoto Fujita、Hiroaki Sasai
DOI:10.1002/anie.201508022
日期:2015.12.14
enantio‐, diastereo‐, regio‐, and chemoselective phosphine‐catalyzed β,γ‐umpolung domino reaction of allenic esters with dienones has been developed for the first time. The designed sequence, involving oxy‐Michael and Rauhut–Currier reactions, produced highly functionalized tetrahydrobenzofuranones, bearing a chiral tetrasubstituted stereogenic center, in up to 96 % ee.
首次开发了烯丙基酯与二烯酮的对映体,非对映体,区域和化学选择性膦催化的β,γ-粗蛋白多米诺骨反应。设计的顺序涉及oxy-Michael和Rauhut-Currier反应,产生了高度官能化的四氢苯并呋喃酮,带有手性四取代的立体异构中心,ee高达96%。