A mild oxidizing reagent for alcohols and 1,2-diols: o-iodoxybenzoic acid (IBX) in DMSO
作者:Marco Frigerio、Marco Santagostino
DOI:10.1016/0040-4039(94)80038-3
日期:1994.10
o-Iodoxybenzoic acid (IBX) smoothly oxidizes primary and secondary alcohols to aldehydes and ketones, respectively. 1,2-Diols are converted to α-ketols or α-diketones without any oxidative cleavage of the glycol CC bond. IBX oxidations are easily conducted in DMSO solution at room temperature, with yields ranging from good to quantitative.
Highly Efficient CH Hydroxylation of Carbonyl Compounds with Oxygen under Mild Conditions
作者:Yu-Feng Liang、Ning Jiao
DOI:10.1002/anie.201308698
日期:2014.1.7
A transition‐metal‐free Cs2CO3‐catalyzed α‐hydroxylation of carbonylcompounds with O2 as the oxygen source is described. This reaction provides an efficient approach to tertiary α‐hydroxycarbonyl compounds, which are highly valued chemicals and widely used in the chemical and pharmaceutical industry. The simple conditions and the use of molecular oxygen as both the oxidant and the oxygen source make
描述了无过渡金属的Cs 2 CO 3催化的羰基化合物的α-羟基化,其中O 2为氧源。该反应为叔α-羟基羰基化合物提供了一种有效的方法,这些叔α-羟基羰基化合物是极有价值的化学物质,广泛用于化学和制药行业。简单的条件和使用分子氧作为氧化剂和氧源使该协议非常环保和实用。此转换是高效的,并且对叔C(sp 3)H键裂解具有高度选择性。
On the mechanism of the thermal conversion of cyclopropenyl-substituted oxazolinones to pyridines
作者:Albert Padwa、Leslie A. Cohen、Henry L. Gingrich
DOI:10.1021/ja00316a042
日期:1984.2
Transformation thermique de phenyl-2 methyl-4 (methyl-1' diphenyl-2',3' cyclopropene-1' yl)-4 oxazoline-2 one-5 en un melange de dimethyl-2,3, -2,4, et -2,5, triphenyl pyridines. Mecanisme faisant intervenir un nitrile ylure intermediaire
Transformation thermique de phenyl-2methyl-4 (methyl-1' diphenyl-2',3' cyclopropene-1' yl)-4 oxazoline-2 one-5 en un melange de dimethyl-2,3, -2,4, et -2,5,三苯基吡啶。Mecanisme faisant intervenir 丁腈橡胶中间体
Mechanism of the Grignard reaction. Reaction of benzil
作者:Kazuhiro. Maruyama、Toshimasa. Katagiri
DOI:10.1021/ja00280a025
日期:1986.10
On demontre que 2 especes paramagnetiques stables participent comme veritables intermediaires de reaction et que la reaction de Grignard a lieu par etapes (transfert initial d'electrons au benzile→transfert de radical alkyl (ou aryl) au radical anionique→second transfert d'electron→second transfert de radical alkyl (ou aryl)) pour conduire au pinacol ou au produit final
On Demontre que 2 esspeces paramagnetiques stables participent comme veritables intermediaires de reaction et que la reaction de Grignard a lieu par etapes (transfert initial d'electrons au benzile→transfert de自由基烷基(ou aryl) au自由基阴离子→second transfert d'electron→第二次转移去自由基烷基(ou 芳基))倒入 conduire au pinacol ou au produit final