Triethyl Phosphite/Benzoyl Peroxide Mediated Reductive Dealkylation of
<i>O</i>
‐Benzoylhydroxylamines: A Cascade Synthesis of Secondary Amides
作者:Balakrishna Aegurla、Ram D. Mandle、Prasad G. Shinde、Ratan S. Parit、Sanjay P. Kamble、Arumugam Sudalai、Beeran Senthilkumar
DOI:10.1002/ejoc.202000611
日期:2020.7.23
An efficient and operationally simple protocol for the synthesis of 2° amides via reductive benzoylation dealkylation of O‐benzoylhydroxylamines (O‐BHA), by using triethylphosphite as a reducing agent and benzoyl peroxide as an oxidizing agent is described.
Amide-Forming Ligation of Acyltrifluoroborates and Hydroxylamines in Water
作者:Aaron M. Dumas、Gary A. Molander、Jeffrey W. Bode
DOI:10.1002/anie.201201077
日期:2012.6.4
Come together, right now: Acyltrifluoroborates and O‐benzoyl hydroxylamines come together to form amides in water (see scheme). The ligations are complete within minutes at room temperature and do not require any reagents or catalysts. The reaction has a broad substrate scope and tolerates unprotected functional groups.
Practical catalytic method for synthesis of sterically hindered anilines
作者:Melrose Mailig、Richard P. Rucker、Gojko Lalic
DOI:10.1039/c5cc03565a
日期:——
A practical catalytic method for the synthesis of sterically hinderedanilines is described. The amination of aryl and heteroaryl boronicesters is accomplished using a catalyst prepared in situ from...
N,N-dimethylchloromethaniminium chloride formed from dimethylformamide and oxalyl dichloride is an efficient reagent for the synthesis of N-substituted hydroxamic acids from carboxylic acids and N-substituted hydroxylamines in the presence of a base.
N-benzoate alkylamines were used as the aminating agents, a efficient Rh-catalyzed ortho CH amination of 2-arylquinazolin-4(3H)-one has been reported. The reactions exhibit high efficient and good functional group tolerance. Exclusive 2,6-bis-aminated product and good to excellent yields were obtained under mild reaction conditions.