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《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2017,129(15):4392-4396
A cobalt‐catalyzed Z ‐selective hydrosilylation of alkynes has been developed relying on catalysts generated from bench‐stable Co(OAc)2 and pyridine‐2,6‐diimine (PDI) ligands. A variety of functionalized aromatic and aliphatic alkynes undergo this transformation, yielding Z ‐vinylsilanes in high yields with excellent selectivities (Z /E ratio ranges from 90:10 to >99:1). The addition of a catalytic amount of phenol effectively suppressed the Z /E ‐isomerization of the Z ‐vinylsilanes that formed under catalytic conditions. 相似文献
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Mingxin Liu Chao‐Jun Li 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2016,128(36):10964-10968
The first example of homogeneous copper‐catalyzed aerobic oxidation of aldehydes is reported. This method utilizes atmospheric oxygen as the sole oxidant, proceeds under extremely mild aqueous conditions, and covers a wide range of various functionalized aldehydes. Chromatography is generally not necessary for product purification. 相似文献
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