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。
[EN] PROCESS FOR THE PREPARATION OF ALPHA-FUNCTIONALIZED KETONES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE CÉTONES FONCTIONNALISÉES EN ALPHA
申请人:IGM GROUP B V
公开号:WO2018197325A1
公开(公告)日:2018-11-01
The present invention refers to a process for the preparation of an α-functionalized ketone, an α-functionalized ketone obtained by said process, a photopolymerizable composition comprising the α-functionalized ketone and at least one photopolymerizable unsaturated compound, a method of preparing an article, an article obtained by said method, as well as the use of the α-functionalized ketone or the photopolymerizable composition as photoinitiator.
PROCESS AND COMPOSITION OF MAKING POLYMERIZABLE RESINS CONTAINING OXAZOLIDONE
申请人:JIN XIAOMING
公开号:US20130184467A1
公开(公告)日:2013-07-18
Disclosed herein are a process and composition to make polymerizable resins containing oxazolidone, in which organic acid-catalyzed and/or thermal annealing process got involved and consequently promoted a unique intramolecular transformation from a linear urethane linkage to a cyclic urethane linkage for those specifically constructed urethane resins containing α-substituted β-ketone moieties.
An efficient method for the direct preparation of high synthetic valuable a-hydroxycarbonyls is described. The simple and readily available I-2 or NBS was used as catalyst. DMSO acts as the oxidant, oxygen source, and solvent. A diverse range of tertiary Csp(3)-H bonds as well as more challenging secondary Csp(3)-H bonds could be hydroxylated in this transformation. The reaction is mild, less toxic and easy to perform.
PROCESS FOR THE PREPARATION OF ALPHA-FUNCTIONALIZED KETONES