The melting point and viscosity of [CF3OCF2CF2BF3]− based ionic liquids are significantly lower than those of [CF3CF2CF2CF2BF3]− based ionic liquids, indicating that the oxygen atom plays a key role in the preparation of low-melting and low-viscosity ionic liquids.
Enantioselective α-Trifluoromethylation of Aldehydes via Photoredox Organocatalysis
作者:David A. Nagib、Mark E. Scott、David W. C. MacMillan
DOI:10.1021/ja9053338
日期:2009.8.12
The first enantioselective, organocatalytic alpha-trifluoromethytation and alpha-perfluoroalkylation of aldehydes have been accomplished using a readily available iridium photocatalyst and a chiral imidazolidinone catalyst. A range of alpha-trifluoromethyl and alpha-perfluoroalkyl aldehydes were obtained from commercially available perfluoroalkyl halides with high efficiency and enantioselectivity. The resulting alpha-trifluoromethyl aldehydes were subsequently shown to be versatile precursors for the construction of a variety of enantioenriched trifluoromethylated building blocks.
Conjugate Electrophilic Iodofluorination of Fluoroolefins
作者:Viacheslav A. Petrov、Carl G. Krespan
DOI:10.1021/jo961271o
日期:1996.1.1
Lur'e,E.P. et al., Journal of Organic Chemistry USSR (English Translation), 1971, vol. 7, p. 1904 - 1908