Catalytic Asymmetric Reduction of α-Trifluoromethylated Imines with Catecholborane by BINOL-Derived Boro-phosphates
作者:Hualing He、Xiaoxue Tang、Yang Cao、Jon C. Antilla
DOI:10.1021/acs.joc.0c03009
日期:2021.3.5
A catalytic enantioselective reduction of α-trifluoromethylated imines by a BINOL-derived boro-phosphate employing catecholborane as hydride source has been developed. This method provides an efficient route to prepare synthetically useful chiral α-trifluoromethylated amines in high yields and with excellent enantioselectivities (up to 98% yield and 96% ee) under mild conditions.
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.