β-Bromodifluoromethyl β-enaminoketones: versatile synthetic intermediates for synthesis of CF2-containing compounds
作者:Yong-Ming Wu、Ya Li、Juan Deng
DOI:10.1016/j.tetlet.2005.06.002
日期:2005.8
A series of N-aryl β-bromodifluoromethyl β-enaminoketones were regioselectively synthesized in good yield by the reaction of N-aryl bromodifluoroacetimidoyl chlorides with methyl ketones. β-Bromodifluoromethyl β-enaminoketones smoothly cyclized to give a novel class of cyclic (2,2-difluoro-5-phenyl-furan-3-ylidene)-aryl-amines under basic condition. An intramolecular halophilic substitution mechanism
Rhodium-Catalyzed Intramolecular Difluoromethylenative Dearomatization of Phenols
作者:Yajun Li、Lisi Zhang、Li Zhang、Yongming Wu、Yuefa Gong
DOI:10.1002/ejoc.201301225
日期:2013.12
Rhodium-catalyzedintramoleculardifluoromethylenativedearomatization of phenols to yield azaspirocyclohexadienones containing all-carbon quaternary centers in good to excellent yields was developed. A variety of functional groups proved compatible with
Facile synthesis of α-fluoro substituted amidines from imidoyl chlorides and some of its application
作者:Yong-Ming Wu、Min Zhang、Yi-Qun Li
DOI:10.1016/j.jfluchem.2006.06.008
日期:2006.9
A series of α-fluoro subustituted amidines were synthesized from corresponding fluorinated imidoyl chlorides in good to excellent yields and some of its applications are outlined in our programs.
A mild and practical strategy for the synthesis of 2-bromodifluoromethyl (or trifluoromethyl)-1H-benzimidazoles via PIDA-mediated oxidative intramolecular cyclization of the fluorinated amidines is described. The approach has the advantages of superior yields, excellent functional groups tolerance and mild reaction conditions. (C) 2011 Elsevier B.V. All rights reserved.