Preparation of 1,1-difluoroalkanes from aldehydes via 1,1-bistriflates: Advantageous use of HF–Lewis base reagents
                                
                                    
                                        作者:William R. Dolbier、Masamune Okamoto                                    
                                    
                                        DOI:10.1016/j.jfluchem.2014.06.020
                                    
                                    
                                        日期:2014.11
                                    
                                    Alkane-1,1-bistriflates, prepared in excellent yields by reaction of aldehydes with triflic anhydride, are converted to their respective 1,1-difluoroalkanes in good to excellent yield through reaction with fluorinating agent, triethylaminetrishydrofluoride. Straight chain 1,1-bistriflates are more reactive than those substituted at the 2-position, but the latter are also converted successfully, without evidence of any rearrangement products. (C) 2014 Elsevier B.V. All rights reserved.