Cu-Catalyzed [1,3]-Alkoxy Rearrangement/Diels–Alder Cascade Reactions via in Situ Generation of Functionalized <i>ortho-</i>Quinol Imines
作者:Itaru Nakamura、Kazuki Masukawa、Yasuhiro Ishida、Masahiro Terada
DOI:10.1021/acs.orglett.1c00995
日期:2021.6.4
A Cu-catalyzed cascade reaction between N-alkoxyanilines having an electron-donating functional group at the ortho position and dienophiles, such as N-methylmaleimide, styrene, and indene, proceeded via a dearomative [1,3]-alkoxy rearrangement followed by the Diels–Alder reaction, affording the corresponding ketimines with highly functionalized bicyclic skeletons in an efficient and stereoselective
之间的铜催化的反应级联N-具有在邻位和亲双烯体,例如给电子官能团烷氧基苯胺Ñ -methylmaleimide,苯乙烯和茚,经由dearomative进行[1,3] -烷氧基重排,随后在Diels-Alder 反应,以有效和立体选择性的方式提供具有高度官能化双环骨架的相应酮亚胺。我们的机理研究表明,[1,3]-重排是决定速率的过程,有效地抑制了不利的副反应。