Reaction of aldehyde O-alkyl oxime with organometallic compounds
作者:Shinichi Itsuno、Koji Miyazaki、Koichi Ito
DOI:10.1016/s0040-4039(00)84709-7
日期:1986.1
Aldehyde O-alkyl oximes were converted into ketones with high yields when they were treated with alkyllithium compounds or Grignard reagents followed by hydrolysis. Amines as reductive alkylation products of aldehyde O-alkyl oximes were also obtained by BH3 reduction before hydrolysis.
An efficient method for the silylation of hydroxyl groups with hexamethyldisilazane (HMDS) catalyzed by aluminum tris(dihydrogen phosphate) under solvent-free and ambient conditions
A highly efficient and mild procedure for the trimethylsilylation of a wide variety of alcohols, including primary, benzylic, secondary, hindered secondary, tertiary, phenols, and oximes with hexamethyldisilazane (HMDS), using Al(H2PO4)3 as a recyclable heterogeneous catalyst at room temperature in a few minutes with excellent yields under solvent-free conditions is described.Key words: trimethylsilylation
Alumina Perchloric Acid (Al<sub><b><i>2</i></b></sub>O<sub><b><i>3</i></b></sub>-HClO<sub><b><i>4</i></b></sub>) as an Efficient Heterogeneous Catalyst for Modified Preparation of Trimethylsilyl Ethers
for the trimethylsilylation of a wide variety of alcohols, including primary, benzylic, secondary, hindered secondary, tertiary, phenols, and oximes with hexamethyldisilazane (HMDS) using alumina perchloric acid (Al 2 O 3 -HClO 4 ) as recyclable heterogeneous catalyst in excellent yields with short reaction times (3−65 min) under ambient conditions is described.
Efficientsilylation of OH group in alcohols, phenols and oximes is described using a catalytic amount of N‐chlorosaccharin and hexamethyldisilazane (HMDS) undermild and solvent‐free conditions. This silylation reaction can be carried out with excellent and interesting various selectivities.
Synthesis of sterically hindered ketones from aldehydes via O-silyl oximes
作者:Joong-Gon Kim、Mithilesh Kumar Mishra、Doo Ok Jang
DOI:10.1016/j.tetlet.2012.05.005
日期:2012.7
A mild and efficient method to synthesize sterically hinderedketones from aldehydes via O-silyl oximes was developed. Treatment of O-triphenylsilylated oximes with alkyl iodides in the presence of triethyl borane afforded the corresponding ketones.