Cu-Catalyzed Carbonylative Silylation of Alkyl Halides: Efficient Access to Acylsilanes
作者:Li-Jie Cheng、Neal P. Mankad
DOI:10.1021/jacs.9b12043
日期:2020.1.8
A Cu-catalyzed carbonylative silylation of unactivated alkyl halides has been developed, enabling efficient synthesis of alkyl-substituted acylsilanes in high yield. A variety of functional groups are tolerated under the mild reaction conditions, and primary, secondary and tertiaryalkyl halides are all applicable. The practical utility of this method has been demonstrated in the synthesis of acylsilanes
已开发出未活化的烷基卤化物的 Cu 催化羰基化硅烷化,能够以高产率高效合成烷基取代的酰基硅烷。在温和的反应条件下可耐受多种官能团,伯、仲、叔烷基卤均适用。该方法的实际效用已在带有不同甲硅烷基的酰基硅烷的合成中以及在一锅中将产物原位还原为相应的-羟基硅烷中得到证明。机理实验表明,甲硅烷基铜中间体通过单电子转移激活烷基卤化物以形成烷基自由基中间体,并且碳 - 卤素键断裂不参与速率决定步骤。
A Ball-Milling-Enabled Cross-Electrophile Coupling
作者:Andrew C. Jones、William I. Nicholson、Jamie A. Leitch、Duncan L. Browne
DOI:10.1021/acs.orglett.1c02096
日期:2021.8.20
cross-electrophile coupling of aryl halides and alkyl halides enabled by ball-milling is herein described. Under a mechanochemical manifold, the reductive C–C bond formation was achieved in the absence of bulk solvent and air/moisture sensitive setups, in reaction times of 2 h. The mechanical action provided by ball milling permits the use of a range of zinc sources to turnover the nickelcatalyticcycle, enabling
Cu-Catalyzed Hydrocarbonylative C–C Coupling of Terminal Alkynes with Alkyl Iodides
作者:Li-Jie Cheng、Neal P. Mankad
DOI:10.1021/jacs.7b05205
日期:2017.8.2
alkynes with unactivated alkyliodides has been developed, enabling highly chemo- and regioselective synthesis of unsymmetrical dialkyl ketones. A variety of functional groups are tolerated, and both primary and secondaryalkyliodides react well. An autotandem sequence of two Cu-catalyzed processes is proposed: first hydrocarbonylative coupling of the alkyne and the alkyliodide, followed by reduction
[EN] A PROCESS FOR THE SYNTHESIS OF AMINE ETHERS<br/>[FR] SYNTHESE D'ETHERS AMINES
申请人:CIBA SC HOLDING AG
公开号:WO2005090307A1
公开(公告)日:2005-09-29
A process for the preparation of a sterically hindered amine ether which comprises reacting a corresponding sterically hindered aminoxide with a C5-C18alk-1-ene in the presence of an organic hydroperoxide and optionally hydrogenating the resulting product as well as the product mixtures obtained therewith and their use as stabilizers and flame retardants.
[EN] STERICALLY HINDERED AMINE AND OXYALKYL AMINE LIGHT STABILIZERS<br/>[FR] AMINE STÉRIQUEMENT ENCOMBRÉE ET AGENTS DE STABILISATION À LA LUMIÈRE D'OXYALKYLAMINE
申请人:3M INNOVATIVE PROPERTIES CO
公开号:WO2016105990A1
公开(公告)日:2016-06-30
The present disclosure relates to sterically hindered alkyl amine and sterically hindered oxyalkyl amine compounds, as well as particles, substrates, coatings, and articles including the same.