Synthesis of bromodifluoromethyl-substituted alkenes. Potassium fluoride supported on alumina as a dehydrobrominating agent
                                
                                    
                                        作者:Chang-Ming Hu、Jian Chen                                    
                                    
                                        DOI:10.1016/0022-1139(93)02954-d
                                    
                                    
                                        日期:1994.1
                                    
                                    Potassium fluoride supported on alumina is an efficient dehydrobrominating agent. 1,3-Dibromo-1,1-difluoroalkanes - adducts of dibromodifluoromethane and alkenes - give bromodifluoromethyl-substituted alkenes 2 on dehydrobromination with this agent in good to excellent yields. Alkenes 2 were a mixture of Z- and E-isomers, with the former predominating. Functional groups such as ester, carbonyl, ethylenic and chloromethyl are not affected under such reaction conditions.