Formation of the Corannulene Core by Nickel-Mediated Intramolecular Coupling of Benzyl and Benzylidene Bromides:  A Versatile Synthesis of Dimethyl 1,2-Corannulene Dicarboxylate
                                
                                    
                                        作者:Andrzej Sygula、Steven D. Karlen、Renata Sygula、Peter W. Rabideau                                    
                                    
                                        DOI:10.1021/ol026457q
                                    
                                    
                                        日期:2002.9.1
                                    
                                    [GRAPHICS]A practical synthesis of dimethyl 1,2-corannulene dicarboxylate (5) is reported, with the final ring-forming step achieved by the double intramolecular nickel powder mediated coupling of benzyl and benzylidene bromide groups with 60% isolated yield.