3-Silylated Cyclohexa-1,4-dienes as Precursors for Gaseous Hydrosilanes: The B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-Catalyzed Transfer Hydrosilylation of Alkenes
作者:Antoine Simonneau、Martin Oestreich
DOI:10.1002/anie.201305584
日期:2013.11.4
Set Me3SiH free! The strong Lewis acid B(C6F5)3catalyzes the release of hydrosilanes from 3‐silylated cyclohexa‐1,4‐dienes with concomitant formation of benzene. Subsequent B(C6F5)3‐catalyzed SiH bond activation allows for alkene hydrosilylation (see scheme). The net reaction is an ionic transfer hydrosilylation. The new technique is particularly attractive in the case of otherwise gaseous, highly
免费给我3 SiH!强路易斯酸B(C 6 F 5)3催化3-硅烷化的环己-1,4-二烯的氢化硅烷的释放,并伴随有苯的形成。随后的B(C 6 F 5)3催化的SiH键活化可实现烯烃的氢化硅烷化(参见方案)。净反应是离子转移氢化硅烷化。在其他气态,高度易燃的氢化硅烷的情况下,新技术特别有吸引力。
Cyclohexa-1,3-diene-based dihydrogen and hydrosilane surrogates in B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-catalysed transfer processes
Transition-metal-free transfer hydrogenation and transfer hydrosilylation of alkenes are achieved with cyclohexa-1,3-diene-based surrogates.
无过渡金属的烯烃转移氢化和转移氢硅烷化可以通过基于环己烯-1,3-二烯的替代物实现。
Use of cyclohexa-2,5-dien-1-yl-silanes as precursors for gaseous hydrosilanes
申请人:Technische Universität Berlin
公开号:EP2845857A1
公开(公告)日:2015-03-11
The invention relates to the use of cyclohexa-2,5-dien-1-yl-silanes of general formula I
for generation of hydrosilanes in solution using a strong Lewis acid. This way, e.g., alkenes can be hydrosilylated in good yields using the cyclohexa-2,5-dien-1-yl-silanes of general formula I as transfer hydrosilylating agents in the presence of a strong Lewis acid as catalyst with concomitant formation of an arene solvent.
USE OF CYCLOHEXA-2,5-DIEN-1-YL-SILANES AS PRECURSORS FOR GASEOUS HYDROSILANES
申请人:TECHNISCHE UNIVERSITÄT BERLIN
公开号:US20160222037A1
公开(公告)日:2016-08-04
A method of making hydrosilanes having a formula R
1
R
2
R
3
SiH by reacting a compound having formula I:
in solution using a strong Lewis acid. This way, e.g., alkenes or carbonyl compounds can be hydrosilylated in good yields using the cyclohexa-2,5-dien-1-yl-silanes of general formula I as transfer hydrosilylating agents in the presence of a strong Lewis acid as catalyst with concomitant formation of an arene solvent.
“Sandwich” Diimine‐Copper Catalysts for C−H Functionalization by Carbene Insertion
作者:Kristine Klimovica、Julius X. Heidlas、Irvin Romero、Thanh V. Le、Olafs Daugulis
DOI:10.1002/anie.202200334
日期:2022.8
A new catalyst platform for C(sp3)−H bond functionalization has been discovered. “Sandwich” diimine-copper(I) complexes catalyze reactions of alkane, ether, and amine C−H bonds with a large panel of diazo compounds. Additionally, the first metal-catalyzed C(sp3)−H methylation by CH2N2 is disclosed. The electrophilicity and extreme steric bulk of these catalysts are likely reasons for their efficiency
发现了一种用于 C(sp 3 )−H 键功能化的新催化剂平台。“三明治”二亚胺-铜(I)络合物催化烷烃、醚和胺CH键与大量重氮化合物的反应。另外,公开了CH 2 N 2的第一个金属催化的C(sp 3 )-H甲基化。这些催化剂的亲电性和极大的空间体积可能是其高效的原因。