[Hydroxy(tosyloxy)iodo]benzene mediated the oxidative cleavage of pyridyl hydrazones to regenerate aryl ketones efficiently. Reaction occurred by simply stirring the hydrazone with hypervalent iodinereagent in dichloromethane at room temperature, where aryl ketones are produced up to 90% yield.
作者:Fan-Rui Huang、Qi-Jun Yao、Peng Zhang、Ming-Ya Teng、Jia-Hao Chen、Lu-Chen Jiang、Bing-Feng Shi
DOI:10.1021/jacs.4c04623
日期:2024.6.5
offer straightforward access to a wide range of chiral molecules bearing [2.2.1]-bridged bicyclic cores with four and five consecutive stereocenters in a single step. Two elaborate salicyloxazoline (Salox) ligands were synthesized based on the rational design and mechanistic understanding. The well-defined chiral pockets generated from asymmetric coordination around the trivalent cobalt catalyst direct