C1 exhibited highlyregio- and stereoselectivehydrosilylation of alkynes with primary and secondary silane to produce α-vinylsilanes. More importantly, C1 shows high regioselectivity for electronically unbiased alkyl alkynes, and the α-selectivity of some alkyl alkynes has not been achieved in previous reports. Leaching tests and reusability proved that the reaction is a heterogeneous process.
Regiocontrol in the cobalt-catalyzed hydrosilylation of alkynes
作者:Guojiao Wu、Uttam Chakraborty、Axel Jacobi von Wangelin
DOI:10.1039/c8cc07267a
日期:——
A highly versatile cobalt-catalyzed hydrosilylations of alkynes is reported. Near-perfect regiocontrol/stereocontrol was induced by the choice of the ligand: bidentate phosphines afforded (E)-β-vinylsilanes; α-vinylsilanes formed with bipyridine ligands.
Aryl–aryl interactions as directing motifs in the stereodivergent iron-catalyzed hydrosilylation of internal alkynes
作者:Christian Belger、Bernd Plietker
DOI:10.1039/c2cc31395b
日期:——
The defined Fe hydride complex FeH(CO)(NO)(Ph3P)2 is highly active as a catalyst for selective hydrosilylation of internal alkynes to vinylsilanes. Depending on the silane employed either E- or Z-selective hydrosilylation products were formed in excellent yields and good to excellent stereoselectivities.