Silica Sulfuric Acid/NaNO 2 as a Novel Heterogeneous System for the Chemoselective α-Nitrosation of β-Diketones Under Mild Conditions
作者:Mohammad Ali Zolfigol、Arash Ghorbani Choghamarani
DOI:10.1080/10426500307868
日期:2003.7
A combination of silica sulfuric acid and sodium nitrite in the presence of wet SiO2 was used as an effective nitrosating agent for the nitrosation of beta-diketones to their corresponding a-nitroso or alpha-oximinoketones under mild and heterogenous conditions in moderate to excellent yields.
Oxidation of α-Oxo-Oximes to Nitrile Oxides with Hypervalent Iodine Reagents
作者:Tim Jen、Brian A. Mendelsohn、Marco A. Ciufolini
DOI:10.1021/jo102241s
日期:2011.1.21
Upon reaction with PhI(OAc)(2), alpha-oxo-aldoximes are oxidized to alpha-oxo-nitrile oxides, while alpha-oxo-ketoximes are converted into nitrile oxides via the oxidative cleavage of the carbonyl-imino sigma bond. The nitrile oxides thus formed were trapped with norbornene or styrene in good yield. alpha,alpha'-Dioxo-ketoximes react less efficiently.
PROCESS FOR PREPARING 1,3-CYCLOHEXANEDIONE DERIVATIVES AND INTERMEDIATES THEREFOR
申请人:CHEVRON RESEARCH AND TECHNOLOGY COMPANY
公开号:EP0195053A1
公开(公告)日:1986-09-24
[EN] PROCESS FOR PREPARING 1,3-CYCLOHEXANEDIONE DERIVATIVES AND INTERMEDIATES THEREFOR
申请人:CHEVRON RESEARCH COMPANY
公开号:WO1986002065A1
公开(公告)日:1986-04-10
(EN) Process for preparing alpha, beta-unsaturated ketones and 1,3-cyclohexanedione derivatives. The 1,3-cyclohexanedione derivatives are useful as intermediates for pesticides especially herbicides.(FR) Procédé de préparation de cétones insaturées alpha, bêta et de dérivés de 1,3-cyclohexanedione. Les dérivés de 1,3-cyclohexanedione sont utiles comme intermédiares pour des pesticides, spécialement des herbicides.