Yichen Wu

Evolution and mechanism of tribological behavior for a-C:H film at low temperature

Kaini Zhou, Zhenrong Gao, Minpeng Dong, Xicai Zhang et autres

cn (code pays fourni par la source)

Enantioselective Hydrosilylation of Diverse Allenes via Nickel Catalysis

Jin-Ping Wang, Qile Wu, T Liu, Yichen Wu et autres

Enantioselective hydrosilylation of allenes remains a significant challenge with a limited scope due to the difficulties in controlling both regioselectivities and enantioselectivities, despite it representing one of the most efficient manners for the preparation of optically pure allylsilanes. Here, we report a …

cn (code pays fourni par la source)

Enantioselective Hydrosilylation of Diverse Allenes via Nickel Catalysis

Yi-Xiang Wang, Qile Wu, T Liu, Yichen Wu et autres

ABSTRACT Enantioselective hydrosilylation of allenes remains a significant challenge with a limited scope due to the difficulties in controlling both regioselectivities and enantioselectivities, despite it representing one of the most efficient manners for the preparation of optically pure allylsilanes. Here, we report …

cn (code pays fourni par la source)

Nickel-Catalyzed Remote Substitution of Alcohols

Zhikai Zhang, Jun-an Lu, Shengye Zhang, J. Zhang et autres

Here, we report a nickel-catalyzed remote substitution of unprotected alkenyl alcohols with arylboronic acids, enabling C-C bond formation at positions distal to the hydroxyl group. Unlike conventional substitution reactions, which occur at the original or allylic position of a leaving group and …

cn (code pays fourni par la source)

Nickel-Catalyzed Regioselective Dihydrosilylation of Allenes

Qing-Yan Wu, Alemayehu Gashaw Woldegiorgis, T Liu, Yichen Wu et autres

Herein, we report a nickel-catalyzed regioselective dihydrosilylation of allenes to access 1,3-bis(silane)s bearing two remote silyl groups. Enabled by a commercially available diphosphine ligand (Xantphos), this method proceeds under mild conditions with exclusive regioselectivity, a broad substrate scope, and excellent functional group …

cn (code pays fourni par la source)

Access to Five-Membered Silacycles via Pd-Catalyzed Heck-Type Coupling with Arylthianthrenium Salts

Jiaquan Wang, Zedong Li, Xiao‐Xue Nie, Fei‐Hu Gou et autres

Here, we report the preparation of a series of dihydrosilole derivatives via a Pd-catalyzed Heck-type reaction by employing arylthianthrenium salts as the arylating reagent. The reaction features mild conditions, excellent functional group and heterocycle tolerance, thus providing a general approach for the …

cn (code pays fourni par la source)

Experimental Investigation into the Mechanical Properties of Fine-Grained Tailings After Cemented Modification

Yichen Wu, Guangjin Wang, Bing Zhao, Jun You et autres

Fine-grained tailings pose significant challenges for direct resource utilization applications such as tailings dam construction and backfill preparation due to their fine particle size, high specific surface area, and extended natural consolidation period. This investigation examined the mechanical properties of cemented fine-grained …

cn (code pays fourni par la source)

Cu-Catalyzed Enantioselective Carbene Insertion into Ge–H and Si–H Bonds Enabled by SPSiBox with a Tunable Chiral Pocket

Shihao Chen, Sheng-Ye Zhang, Ziyang Chen, Yichen Wu et autres

Here, we report the Cu-catalyzed asymmetric carbene insertion into both Ge–H and Si–H bonds with α-trifluoromethyl diazo compounds, enabled by a class of newly developed C 2 -symmetrical bisoxazoline ligands. This protocol provides an efficient method for the preparation of enantioenriched α-trifluoromethyl …

cn (code pays fourni par la source)

Direct Coupling of Polyfluoroarenes with Acylsilanes Under Metal‐Free Conditions

M. Yasin, Yingchao Li, Long Zheng, Yichen Wu et autres

Abstract The installation of polyfluoroaryl group in functional molecules is of interest due to the presence of polyfluoroarenes in pharmaceuticals, agrochemicals, and advanced materials. Herein, we report the direct coupling of polyfluoroarenes with acylsilanes for synthesis of fluorinated benzylic alcohols in the …

cn (code pays fourni par la source)

Ligand-enabled, Ni-catalyzed dicarbofunctionalization of alkenyl alcohols

Li‐Qin She, Daoming Wang, Yichen Wu, Peng Wang

cn (code pays fourni par la source)

Microstructures and mechanical properties of novel 2.3 GPa secondary hardening steels with different Ni contents

Wenhong Peng, Yichen Wu, Ruming Geng, Yuxian Cao et autres

The development of ultra-high strength steels with balanced ductility and toughness is of significant industrial importance. In the present study, impact toughness, tensile properties, and microstructural evolution of high-Co-Ni secondary hardening steels were investigated by adding Ni from 13-15 wt.%. Within a …

cn (code pays fourni par la source)

Rh-catalyzed enantioselective hydrosilylation of unactivated alkenes

Yichen Wu, Hao Qian, Heng Zhang, J. H. Zou et autres

Here, we report a highly efficient rhodium-catalysed enantioselective hydrosilylation of unactivated alkenes, achieving excellent regioselectivity and high enantioselectivity. The use of a commercially available chiral ferrocene-based phosphine-oxazoline ligand was crucial in achieving excellent chiral induction and high reactivity with undirected unactiviated alkenes, …

cn (code pays fourni par la source)