最近氘代候选药物的应用激增,迫切需要各种氘标记技术。在此,开发了一种高效的 Rh 催化的氘代 Tsuji-Wilkinson 用 D 2 O 对天然可用的醛进行脱羰反应。在该反应中,D 2 O 不仅充当氘代试剂和溶剂,而且还促进 Rh 催化的脱羰。此外,从 α,β-不饱和醛合成末端单氘代烯烃的脱羰策略也触手可及。
Palladium-Catalyzed Reductive Carbonylation of Aryl Halides with<i>N</i>-Formylsaccharin as a CO Source
作者:Tsuyoshi Ueda、Hideyuki Konishi、Kei Manabe
DOI:10.1002/anie.201303926
日期:2013.8.12
Easy peasy: The title reaction employs N‐formylsaccharin, which is an easily accessible crystalline compound, as an effective COsource. The reactions proceed with a small excess of the COsource at moderate temperatures and were successfully applied to a wide range of aryl bromides. DMF=N,N‐dimethylformamide, dppb=1,4‐bis‐(diphenylphosphino)butane.
[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.
chemoselectivity and the regioselectivity for the deuteration of alcohols in organic media; 2) the synthesis of fragile pharmaceutically relevant deuterated heterocycles (azine, purine) that are otherwise completely reduced using unmodified commercial catalysts; 3) the discovery of a novel reactivity for such heterogeneous Ru catalysts, namely the selective C‐1 deuteration of aldehydes.
[EN] SYNTHESIS OF DEUTERATED ALDEHYDES<br/>[FR] SYNTHÈSE D'ALDÉHYDES DEUTÉRÉS
申请人:UNIV ARIZONA
公开号:WO2021045879A1
公开(公告)日:2021-03-11
Described are methods for preparing a deuterated aldehyde using N-heterocyclic carbene catalysts in a solvent comprising D2O. 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 without functionality manipulation.