1817-90-9Relevant articles and documents
γ-Ray-induced reduction of sterically hindered alkyl carboxylates with trichlorosilane in the presence of hydrogen chloride. Two-step mechanism for the formation of alkanes via the alkyl chloride
Oka, Kunio,Nakao, Ren
, p. 31 - 35 (1989)
γ-Irradiation of a mixture of 1-adamantyl acetate and trichlorosilane (TCS) in the presence of hydrogen chloride yields adamantane. The first step of this reaction entails cleavage of the alkyloxygen bond by the action of HCl and TCS to give the alkyl chloride. The chloride, in the second step, is dechlorinated by TCS by a known, free-radical mechanism. t-Amyl and benzyl acetates react analogously to 1-adamantyl acetate in this system to give isopentane and toluene, whereas other primary and secondary alkyl derivatives produce the corresponding dialkyl ethers by a known, free-radical mechanism.
A Versatile Iridium(III) Metallacycle Catalyst for the Effective Hydrosilylation of Carbonyl and Carboxylic Acid Derivatives
Corre, Yann,Rysak, Vincent,Trivelli, Xavier,Agbossou-Niedercorn, Francine,Michon, Christophe
supporting information, p. 4820 - 4826 (2017/09/07)
A versatile iridium(III) metallacycle catalysed rapidly and selectively the reduction of a large array of challenging esters and carboxylic acids as well as various ketones and aldehydes. The reactions proceeded in high yields at room temperature by hydrosilylation followed by desilylation. Although the reactions of various aldehydes and ketones resulted exclusively in alcohols, the hydrosilylation of esters led to alcohols or ethers, depending on the type of substrate. Regarding the carboxylic acids, again the nature of the reagent controlled the outcome of the hydrosilylation reaction, either alcohols or aldehydes being formed.
Selective Hydrosilylation of Esters to Aldehydes Catalysed by Iridium(III) Metallacycles through Trapping of Transient Silyl Cations
Corre, Yann,Rysak, Vincent,Capet, Frédéric,Djukic, Jean-Pierre,Agbossou-Niedercorn, Francine,Michon, Christophe
supporting information, p. 14036 - 14041 (2016/09/21)
The combination of an iridium(III) metallacycle and 1,3,5-trimethoxybenzene catalyses rapidly and selectively the reduction of esters to aldehydes at room temperature with high yields through hydrosilylation followed by hydrolysis. The ester reduction involves the trapping of transient silyl cations by the 1,3,5-trimethoxybenzene co-catalyst, supposedly by formation of an arenium intermediate whose role was addressed by DFT calculations.