Synthesis of Silacyclohexanones from Divinylsilanes and Allylamines by a Rh-Catalyzed Cyclization
作者:Jiawei Guo、Song Liu、Qinjiao Pang、Hongyun Zhang、Lu Gao、Li Chen、Zhenlei Song
DOI:10.1021/acs.orglett.1c04183
日期:2022.1.21
An efficient synthesis of silacyclohexanones bearing a variety of silyl substituents has been developed by a [Rh(coe)2Cl]2/PCy3-catalyzed cyclization of divinylsilanes with Jun’s allylamine. The silacyclohexanones can be oxidized with DDQ to give the corresponding silacyclohexadienones, which are further transformed into silicon analog of 2-deoxystreptamine or exo-alkylidenesilacyclohexadienes.
Hydrosilylation Reaction Catalysts and Curable Compositions and Methods for Their Preparation and Use
申请人:Dow Corning Corporation
公开号:US20140296468A1
公开(公告)日:2014-10-02
A composition contains (A) a hydrosilylation reaction catalyst and (B) an aliphatically unsaturated compound having an average, per molecule, of one or more aliphatically unsaturated organic groups capable of undergoing hydrosilylation reaction. The composition is capable of reacting via hydrosilylation reaction to form a reaction product, such as a silane, a gum, a gel, a rubber, or a resin. Ingredient (A) contains an iron-organosilicon ligand complex that can be prepared by reacting an iron carbonyl compound and an organosilicon ligand.
Catalytic Asymmetric Homologation of 4‐Substituted Cyclohexanones with CF
<sub>3</sub>
CHN
<sub>2</sub>
: Enantioselective Synthesis of α
<i>‐</i>
Trifluoromethyl Cycloheptanones
作者:Shu‐Sen Li、Shuo Sun、Jianbo Wang
DOI:10.1002/anie.202115098
日期:2022.2
reaction of cyclic ketones with CF3CHN2 as the trifluoromethylation reagent. This reaction could be applied to construct silicon-stereogenic centers with moderate diastereoselectivities and high enantioselectivities.
[EN] CAPPED DUAL-HEADED ORGANOALUMINUM COMPOSITIONS<br/>[FR] COMPOSITIONS D'ORGANOALUMINIUM À DEUX TÊTES COIFFÉES
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2019133699A1
公开(公告)日:2019-07-04
The present disclosure relates to a capped dual-headed organoaluminum composition having the formula (I) and processes to prepare the same. In at least one aspect, the capped dual-headed organoaluminum compositions can be used in olefin polymerization.
Reactions of carboxamides with vinylsilanes under oxidative conditions
作者:Vera V. Astakhova、Mikhail Yu. Moskalik、Bagrat A. Shainyan
DOI:10.1016/j.jorganchem.2021.122230
日期:2022.2
The reactions of acetamide, benzamide and trifluoroacetamide with trimethyl(vinyl)-, triphenyl(vinyl)-, dimethyl(divinyl)- and diphenyl(divinyl)silanes in the presence of oxidants (t-BuOCl + NaI) or N-bromosuccinimide (NBS) in acetonitrile have been studied. Generally, all unsaturated silanes react with trifluoroacetamide to give the products of haloamidation, whereas with acetamide or benzamide the