Catalytic Conversions in Water. Part 21: Mechanistic Investigations on the Palladium-Catalysed Aerobic Oxidation of Alcohols in Water†
摘要:
Water-soluble complexes of palladium(II) with phenanthroline-derivatives are stable, recyclable catalysts for the selective aerobic oxidation of a wide range of alcohols to aldehydes, ketones, and carboxylic acids in a biphasic liquid-liquid system. The active catalyst is a dihydroxy-bridged palladium dimer. Kinetics of the reaction, ligand and anion effects are discussed.
Cobalt‐Catalyzed Asymmetric Remote Borylation of Alkyl Halides
作者:Minghao Zhang、Zhiyang Ye、Wanxiang Zhao
DOI:10.1002/anie.202306248
日期:2023.8
A cobalt-catalyzed asymmetric remote borylation of alkyl bromides is reported. The application of this migratory borylation was extended to other alkyl electrophiles (alkyl-X with X=I, Cl, OTs) and aryl halides. Additionally, a gram-scale reaction could be conducted while further transformation of the borylated products was demonstrated. Preliminary mechanistic studies indicated a radical reaction