Baeyer-Villiger Oxidation with Me<sub>3</sub>SiOOSiMe<sub>3</sub>under Assistance of SnCl<sub>4</sub>or BF<sub>3</sub>·OEt<sub>2</sub>
作者:Seijiro Matsubara、Kazuhiko Takai、Hitosi Nozaki
DOI:10.1246/bcsj.56.2029
日期:1983.7
Treatment of ketones with bis(trimethylsilyl) peroxide and Lewis acid such as SnCl4 or BF3·OEt2 in dichloromcthane at room temperature affords esters in fair to excellent yields. Jasmine lactone is synthesized from 2-[(Z)-2-pentenyl]cyclopentanone by means of Me3SiOOSiMe3–BF3·OEt2 system without any protection of the carbon-carbon double bond. The oxidation of enol acetates of ketones to α-hydroxy (or α-acetoxy) ketones with Me3SiOOSiMe3–FeCl3 system is also disclosed.
A new, highly selective and high yielding procedure is described for the Baeyer-Villiger oxidation, using a tin-catalyst and bis(trimethylsilyl) peroxide (BTP).
Free radical allylations of α-seleno carbonyl compounds with tributyl-substituted 2,4-pentadienyltin, 2-methyl-2-propenyltin, 2-butenyltin, and 3-methyl-2-butenyltin, are described. Such successful C–C bond formations, in particular with the 2-butenyltin and the 3-methyl-2-butenyltin, are owing to the high reactivity of the α-carbon radical, generated from α-seleno carbonyl compounds, toward allylic tin compounds.
[EN] PROCESS FOR PREPARING PERFUMING INTERMEDIATE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN INTERMÉDIAIRE PARFUMANT
申请人:FIRMENICH & CIE
公开号:WO2021176009A1
公开(公告)日:2021-09-10
The present invention relates to the field of organic synthesis and more specifically it concerns a process for preparing compound of formula (I) by a cross metathesis reaction. Said compound of formula (I) is valuable new chemical intermediate for producing perfuming ingredients and is also part of the present invention.