Rhodium-Catalyzed Directing-Group-Assisted Aldehydic C-H Arylations with Aryl Halides
作者:Maddali L. N. Rao、Boddu S. Ramakrishna
DOI:10.1002/ejoc.201700881
日期:2017.9.15
A broad scope for the synthesis of 2′‐substituted benzophenones was established involving directing group (OH or NHTs) assisted C–H arylation of aryl aldehydes with arylhalides under rhodium‐catalyzed conditions.
Ruthenium‐Catalyzed Direct Asymmetric Reductive Amination of Diaryl and Sterically Hindered Ketones with Ammonium Salts and H
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作者:Le' an Hu、Yao Zhang、Qing‐Wen Zhang、Qin Yin、Xumu Zhang
DOI:10.1002/anie.201915459
日期:2020.3.23
A Ru-catalyzed directasymmetric reductive amination of ortho-OH-substituted diaryl and sterically hindered ketones with ammonium salts is reported. This method represents a straightforward route toward the synthesis of synthetically useful chiral primary diarylmethylamines and sterically hindered benzylamines (up to 97 % yield, 93->99 % ee). Elaborations of the chiral amine products into bioactive
Rearrangement of 2-Aryloxybenzaldehydes to 2-Hydroxybenzophenones by Rhodium-Catalyzed Cleavage of Aryloxy CO Bonds
作者:Honghua Rao、Chao-Jun Li
DOI:10.1002/anie.201103599
日期:2011.9.12
Lost in the shuffle: An unprecedented rearrangement of the title compounds proceeds by the simultaneous rhodium‐catalyzed cleavage of aryloxy CO and aldehyde CH bonds (see scheme). The reaction tolerates the presence of various catalytically reactive substituents such as aryl halides, nitrile, and esters.