Chalk-Harrod mechanism and modified Chalk-Harrod mechanism …
Hydrosilylation reactions catalyzed by platinum catalysts commonly follow Chalk-Harrod and modified Chalk- Harrod mechanisms (Figure 3), rendering side-reactions possible that yield …
Hydrosilylation - Chemistry LibreTexts
2023年6月30日 · A well-known mechanism of metal catalyzed hydrosilylation is the Chalk-Harrod mechanism. It proceeds through oxidative addition of the Si-H to the metal center and then …
Recent Advances in Catalytic Hydrosilylations: Developments …
2020年7月15日 · Deuterium-labeling studies support the classic Chalk–Harrod mechanism with a Co–H intermediate resulting from oxidative addition of the silane to the metal center for the …
A theoretical investigation of the Chalk–Harrod and modified Chalk …
2004年6月15日 · The set of these processes are known as the Chalk–Harrod mechanism and the modified Chalk–Harrod mechanism, respectively. The main goal of this work has been to …
Mechanistic insights into the hydrosilylation of allyl compounds ...
2012年11月1日 · The Chalk–Harrod mechanism (CH), which is widely accepted for the Pt-catalyzed hydrosilylation of olefins [17] and the modified variant thereof (mCH) [18], …
Mechanisms of Co2L8 (L = CO, CNR)-Catalyzed Hydrosilylation of …
2023年10月10日 · For the hydrosilylation of alkenes catalyzed by Co 2 L 8 (L = CO, CNR), the Type II Chalk–Harrod cycle (the CH-II cycle) starting from HCoL 4 ([2H]L) and the Type II …
Stereospecific Si-C coupling and remote control of axial ... - Nature
2020年6月9日 · In the more favourable pathway (path A of Supplementary Fig. 8) migratory insertion of an Pd/olefin hydride complex followed by reductive Si–C coupling (simplified as …
Accelerated Anti‐Markovnikov Alkene Hydrosilylation with …
2021年9月2日 · As proposed by Chalk and Harrod, the reaction mechanism of Pt-catalyzed alkene hydrosilylation can be divided into three sequential steps: Si–H oxidation addition to Pt, …
Cobalt-catalyzed alkyne hydrosilylation as a new frontier to ...
During the past few years, a number of well-defined, robust cobalt-catalyst platforms that broadly operate either the Chalk–Harrod or a modified Chalk–Harrod mechanism have emerged as a …
Coordination Assistance: A Powerful Strategy for Metal-Catalyzed …
2023年1月11日 · First, we describe our early work aimed at controlling the regio- and enantioselectivity of hydroalkynylation using disubstituted enamide as the substrate. Both α- …
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