A reasonable explanation for the mechanism of photo-promoted chemoselective aerobic oxidation of alcohols using (ON)Ru(salen) complex as catalyst
摘要:
The mechanism of aerobic oxidation of alcohols using (ON)Ru(salen) complex as catalyst under photo-irradiation was examined through studies of kinetics of the oxidation, kinetic isotope effect in the oxidation, and effect of the ligand structure on the chemoselectivity of the oxidation of primary and secondary alcohols. It was demonstrated that the aerobic oxidation includes an intramolecular hydrogen atom transfer process that is attributed to realization of efficient differentiation of primary and secondary alcohols in the oxidation. (c) 2005 Elsevier Ltd. All rights reserved.
Selective Synthesis of α,α-Dideuterio Alcohols by the Reduction of Carboxylic Acids Using SmI<sub>2</sub> and D<sub>2</sub>O as Deuterium Source under SET Conditions
作者:Michal Szostak、Malcolm Spain、David J. Procter
DOI:10.1021/ol502404e
日期:2014.10.3
The first general method for the chemoselective synthesis of alpha,alpha-dideuterio alcohols directly from feedstock carboxylic acids under single electron transfer conditions using SmI2 is reported. This reaction proceeds after the activation of Sm(II) with a Lewis base, results in excellent levels of deuterium incorporation across a wide range of substrates, and represents an attractive alternative to processes mediated by pyrophoric alkali metal deuterides.
Mn(0)-Mediated Chemoselective Reduction of Aldehydes. Application to the Synthesis of α-Deuterioalcohols
作者:Tania Jiménez、Elisa Barea、J. Enrique Oltra、Juan M. Cuerva、José Justicia
DOI:10.1021/jo1015618
日期:2010.10.15
A mild simple safe chemoselective reduction of different kinds to the corresponding alcohols mediated by the Mn dust/water system is described. In addition to this, the use of D2O leads to the synthesis of alpha-deuerated alcohols and constitutes an efficient inexpensive alternative for the preparation of these compounds.
Synthesis of α-Deuterioalcohols by Single-Electron Umpolung Reductive Deuteration of Carbonyls Using D2O as Deuterium Source
作者:Yuxia Hou、Zemin Lai、Lei Ning、Yixuan Li、Jie An、Hengzhao Li、Ailing Li
DOI:10.1055/a-1523-3336
日期:2021.7
Deuteriumincorporation can effectively stabilize the chiral centers of drug and agrochemical candidates that hampered by rapid in vivo racemization. In this work, the synthetically challenging chiral-center deuteration of alcohols has been achieved via a single-electron umpolung reductive-deuteration protocol using benign D2O as deuterium source and mild SmI2 as electron donor. The broad scope and
The mechanism of aerobic oxidation of alcohols using (ON)Ru(salen) complex as catalyst under photo-irradiation was examined through studies of kinetics of the oxidation, kinetic isotope effect in the oxidation, and effect of the ligand structure on the chemoselectivity of the oxidation of primary and secondary alcohols. It was demonstrated that the aerobic oxidation includes an intramolecular hydrogen atom transfer process that is attributed to realization of efficient differentiation of primary and secondary alcohols in the oxidation. (c) 2005 Elsevier Ltd. All rights reserved.