Difluoromethylaziridines were synthesized by the reaction of dimethylsulfonium methylide with difluoroenamines which were easily prepared from trifluoromethylimines by magnesium-promoted defluorosilylation. (C) 2002 Elsevier Science Ltd. All rights reserved.
Difluoromethylaziridines were synthesized by the reaction of dimethylsulfonium methylide with difluoroenamines which were easily prepared from trifluoromethylimines by magnesium-promoted defluorosilylation. (C) 2002 Elsevier Science Ltd. All rights reserved.
Ethylene Glycol: A Powerful Catalyst‐Free Medium for CC Bond‐Forming Reactions
作者:Yun‐Lin Liu、Xing‐Ping Zeng、Jian Zhou
DOI:10.1002/asia.201200289
日期:2012.8
A good EG: Ethylene glycol (EG) is a catalyst‐free medium that can promote the highly efficient Strecker reaction of α‐CF2H or α‐CF3 ketoimines and TMSCN. EG was used in several reactions, including the catalyst‐free Morita–Baylis–Hillman reaction.
A highly enantioselective Strecker reaction of difluoromethyl and trifluoromethyl ketoimines was developed. Remarkable fluorine effect on the reactivity and selectivity is observed and discussed.