aliphatic carboxylic acids with D2O as an inexpensive deuterium source. The use of Ph3P as an O‐atom transfer reagent can facilitate the deoxygenation of aromatic acids, while Ph2POEt is a better O‐atom transfer reagent for aliphatic acids. The highly precise deoxygenation of complex carboxylic acids makes this protocol promising for late‐stage deoxygenative deuteration of natural product derivatives
Visible-light-mediated deuteration of aldehydes with D2O via polarity-matched reversible hydrogen atom transfer
作者:Jian-Yang Dong、Wen-Tao Xu、Fu-Yang Yue、Hong-Jian Song、Yu-Xiu Liu、Qing-Min Wang
DOI:10.1016/j.tet.2021.131946
日期:2021.2
protocol for visible-light-mediated metal-free deuteration of aldehydes in D2O with synergistic photoredox and thiol catalysis. The protocol is highly efficient, has a broad substrate scope, and shows excellent functional group tolerance and selectivity, all of which make it suitable for generating libraries of deuterated compounds. The efficient deuteration was attributed to a photoredox-catalyzed polarity-matched
[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.
efficient hydrogen deuterium exchange reaction using deuterium oxide (D2O) as the deuterium source, enabled by merging a tetra-n-butylammonium decatungstate (TBADT) hydrogen atom transfer photocatalyst and a thiol catalyst under light irradiation at 390 nm. This deuteration protocol is effective with formyl C–H bonds and a wide range of hydridic C(sp3)–H bonds (e.g. α-oxy, α-thioxy, α-amino, benzylic, and