Enantioselective Synthesis of γ-Oxycarbonyl Motifs by Conjugate Addition of Photogenerated α-Alkoxy Radicals

被引：14

作者：

Dong, Xiao ^{[1
]}

Li, Qi Yukki ^{[1
]}

Yoon, Tehshik P. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA

来源：

ORGANIC LETTERS | 2021年 / 23卷 / 15期

关键词：

ALDOL REACTION; CATION; DESILYLATION; PHOTOREDOX; ETHERS;

D O I：

10.1021/acs.orglett.1c01790

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Enantioselective catalytic Giese addition of photo-generated alpha-alkoxy radicals to acyl pyrazolidinones can be accomplished using a tandem Sc(III) Lewis acid/photoredox catalyst system. Surprisingly, the excited-state oxidation potential was not the only important variable, and the optimal photocatalyst was not the strongest oxidant screened. Our results show that both the oxidation and reduction potentials of the photocatalyst can be important for the reaction outcome, highlighting the importance of holistic considerations in designing photochemical reactions.

引用

页码：5703 / 5708

页数：6

共 39 条

[1]

[Anonymous], 1989, Logic of Chemical Synthesis

[2] Enantioselective photochemistry through Lewis acid-catalyzed triplet energy transfer [J].