Migration of the Hydroxyl Group of N-Hydroxy-N-phenylamides to the Phenyl Group with Tertiary Phosphines and Tetrachloromethane. A Novel Transhydroxylation Reaction
作者:Yasuo Kikugawa、Kimiyo Mitsui
DOI:10.1246/cl.1993.1369
日期:1993.8
N-hydroxy-N-phenylamides rearranges mainly to the ortho position of the N-phenyl ring by the system (n-Bu)3P-CCl4-CH3CN; use of less than a stoichiometric amount of (n-Bu)3P is effective for this reaction.
N-HETEROCYCLIC CARBENE (NHC) CATALYZED SYNTHESIS OF HYDROXAMIC ACIDS
申请人:Zhang Yugen
公开号:US20100105921A1
公开(公告)日:2010-04-29
A process for preparing hydroxamic acids is provided. The process comprises reacting an aldehyde with a nitroso compound in the presence of a N-heterocyclic carbene (NHC) catalyst.
N-heterocyclic carbene (NHC) catalyzed synthesis of hydroxamic acids
申请人:Agency for Science, Technology and Research
公开号:US08143423B2
公开(公告)日:2012-03-27
A process for preparing hydroxamic acids is provided. The process comprises reacting an aldehyde with a nitroso compound in the presence of a N-heterocyclic carbene (NHC) catalyst.
N-Heterocyclic Carbene (NHC)-Catalyzed Direct Amidation of Aldehydes with Nitroso Compounds
作者:Fong Tian Wong、Pranab K. Patra、Jayasree Seayad、Yugen Zhang、Jackie Y. Ying
DOI:10.1021/ol8004276
日期:2008.6.1
NHC-catalyzed direct amidation of aldehydes with nitroso compounds is a powerful method for the synthesis of N-arylhydroxamic acids. A variety of aryl, alkyl, alkenyl, and heterocyclic aldehydes were found to give excellent yields of the corresponding N-arylhydroxamic acids. This chemistry was also extended to the synthesis of chiral N-arylhydroxamic acids by kinetic resolution of a-branched aldehydes, a domino amidation-redox amination reaction of acrolein, and a three-component reaction for the synthesis of N-arylaziridines.