Oxidative Cleavage of Silyl Ethers by an Oxoammonium Salt
作者:Nicholas Leadbeater、Jacob Loman、Vincent Pistritto、Christopher Kelly
DOI:10.1055/s-0035-1561498
日期:——
A method for the oxidativecleavage of silyl ethers to their corresponding carbonyl species mediated by an oxoammonium salt is described. The resulting aldehydes and ketones are obtained under mild reaction conditions with no observed overoxidation. For robust substrates, heating to reflux temperatures significantly reduces the reaction time.
A Facile β-Cyclodextrin-Catalyzed Oxidative Deprotection of <i>tert</i>-Butyldimethylsilyl (TBDMS) Ethers with NBS in Water
作者:K. Rao、M. Reddy、M. Narender、Y. Nageswar
DOI:10.1055/s-2005-861808
日期:——
Treatment of TBDMS ethers with NBS in the presence of β-cyclodextrin in water results, for the first time, in the cleavage of the silicon-oxygen bond, carbonyl compounds are obtained upon oxidation.
The (salen)manganese(III) complex-catalyzed oxidation of C-H bonds of symmetrical alkanes and symmetrical 1,3- and 1,4-disilyl ethers with iodosylbenzene gave the corresponding optically active ketones (up to 70% ee) and beta- and gamma-siloxyketones (up to 93% ee). (c) 2005 Elsevier Ltd. All rights reserved.