Catalytic synthesis of silyl formates with 1 atm of CO2 and their utilization for synthesis of formyl compounds and formic acid
摘要:
In the presence of simple Rh-2(OAc)(4) and K2CO3, the hydrosilylation of CO2 (1 atm) with various hydrosilanes efficiently proceeded to afford the corresponding silyl formates in moderate to high yields (53-90% yields). By using the dimethylphenylsilyl formate produced by the hydrosilylation, formamides, formic acid, and a secondary alcohol (via an aldehyde) could be synthesized by the reaction with various nucleophilic reagents such as amines, aniline, water, and the Grignard reagent. (c) 2012 Elsevier B.V. All rights reserved.
A recyclable CO surrogate in regioselective alkoxycarbonylation of alkenes: indirect use of carbon dioxide
作者:P. H. Gehrtz、V. Hirschbeck、I. Fleischer
DOI:10.1039/c5cc05012j
日期:——
Herein, we report a Pd-catalysed alkoxycarbonylation of alkenes based on the use of a recyclable CO2reduction product, the crystalline and air-stableN-formylsaccharin, as a CO surrogate.
Use of Silylated Formiates as Hydrosilane Equivalents
申请人:Commissariat a l'Energie Atomique et aux Energies Alternatives
公开号:US20210292345A1
公开(公告)日:2021-09-23
The present invention relates to a method for preparing organic compounds of formula (I) by reaction between a silylated formiate of formula (II) and an organic compound in the presence of a catalyst and optionally of an additive.
The invention also relates to use of the method for preparing organic compounds of formula (I) for the preparation of reagents for fine chemistry and for heavy chemistry, as well as in the production of vitamins, pharmaceutical products, adhesives, acrylic fibres, synthetic leathers, and pesticides.
An iron catalyst is shown for the first time to promote transfer hydrosilylation with silyl formates and is utilized for the silylation of alcohols. Attractive features of this protocol include the use of an earth-abundant transition-metal catalyst, mild reaction conditions, and the release of gases as the only byproducts (H 2 and CO 2 ).
铁催化剂首次被证明可促进甲酸甲硅烷基的转移氢化硅烷化,并用于醇的硅烷化。该协议的吸引人的特点包括使用地球上丰富的过渡金属催化剂、温和的反应条件以及作为唯一副产品 (H 2 和 CO 2 ) 的气体释放。
Synthesis of silyl formates, formamides, and aldehydes <i>via</i> solvent-free organocatalytic hydrosilylation of CO<sub>2</sub>
作者:Takumi Murata、Mahoko Hiyoshi、Manussada Ratanasak、Jun-ya Hasegawa、Tadashi Ema
DOI:10.1039/d0cc01371d
日期:——
formates, formamides, and aldehydes. Tetrabutylammonium acetate (TBAA) catalyzed the solvent-free N-formylation of amines with CO2 and hydrosilane to give formamides including Weinreb formamide, Me(MeO)NCHO, which was successively converted into aldehydes by one-pot reactions with Grignardreagents.
Mechanistic Insights on the Reduction of CO<sub>2</sub>
to Silylformates Catalyzed by Ir-NSiN Species
作者:Alejandro Julián、Jefferson Guzmán、E. A. Jaseer、Francisco J. Fernández-Alvarez、Raquel Royo、Víctor Polo、Pilar García-Orduña、Fernando J. Lahoz、Luis A. Oro
DOI:10.1002/chem.201702246
日期:2017.9.4
that using 1 as catalyst precursor above 328 K decreases the activity through a thermally competitive mechanistic pathway. Indeed, the reduction of the ancillary trifluoroacetate ligand to give the corresponding silylether CF3CH2OSiR3 has been observed. Moreover, mechanistic studies for the 1‐catalyzed CO2‐hydrosilylation reaction based on experimental and theoretical studies suggest that 1 prefers an