名称:
                                Synthesis of novel 2-trifluoromethyl-1-methylene-3-phenylindene derivatives via carbocyclization reaction of 2-trifluoromethyl-1,1-diphenyl-1,3-enynes
                             
                            
                                摘要:
                                Trifluoromethylated enynyl sulfones 3 were reacted with PhLi at -78 degrees C for 2-4 h to give 2-trifluoromethyl-1,1-diphenyl-1,3-enynes 6 in good yields. Carbocyclization reaction of 6 with 10 mol% of Pd(OAc)(2) in cosolvent of CF3COOH and MC (4:1) at room temperature for 1 h afforded 2-trifluoromethyl-1-methylene-3-phenylindene derivatives 7 in good yields. (C) 2011 Published by Elsevier B.V.
                             
                                                            
                                    DOI:
                                    10.1016/j.jfluchem.2011.06.031