[EN] VISIBLE-LIGHT MEDIATED ORGANOPHOTOREDOX CATALYTIC DEUTERATION OF AROMATIC AND ALIPHATIC ALDEHYDES<br/>[FR] DEUTÉRATION CATALYTIQUE ORGANO-PHOTOREDOX D'ALDÉHYDES AROMATIQUES ET ALIPHATIQUES PAR L'INTERMÉDIAIRE DE LUMIÈRE VISIBLE
申请人:UNIV ARIZONA
公开号:WO2021118827A1
公开(公告)日:2021-06-17
Described are methods for preparing a deuterated aldehyde using with a photocatalyst and a hydrogen atom transfer agent in a H2O free solvent comprising D2O and an organic solvent under an inert gas. The methods may be used to convert a wide variety of aldehydes (e.g., aryl, alkyl, or alkenyl aldehydes) to C-1 deuterated aldehydes under mild reaction conditions.
A simple synthesis of the deuteriumlabeled (+)-silybin [(+)-lc,d], (+)-isosilybin [(+)-2c,d] and their 1,4-benzodioxane building block [rac.-If] have been achieved in seven steps starting from vanilline (5).
Deuteration of Formyl Groups via a Catalytic Radical H/D Exchange Approach
作者:Yueteng Zhang、Peng Ji、Yue Dong、Yongyi Wei、Wei Wang
DOI:10.1021/acscatal.9b05300
日期:2020.2.7
represents the straightforward approach to C-1 deuterated aldehydes. This transformation has been recently realized by transitionmetal and NHC carbene catalysis. Mechanistically, all of these processes involve an ionic pathway. Herein, we report a distinct photoredox catalytic, visible light mediated neutral radical approach. Selective control of highly reactive acyl radical in the energy barrier surmountable