CuCN-Mediated Cascade Cyclization of 4-(2-Bromophenyl)-2-butenoates: A High-Yield Synthesis of Substituted Naphthalene Amino Esters
                                
                                    
                                        作者:R. Santhosh Reddy、Pragati K Prasad、Brij Bhushan Ahuja、Arumugam Sudalai                                    
                                    
                                        DOI:10.1021/jo400244h
                                    
                                    
                                        日期:2013.5.17
                                    
                                    A new method of CuCN-mediated one-pot cyclization of 4-(2-bromophenyl)-2-butenoates leading to efficient synthesis of substituted naphthalene amino esters including phenanthrene aromatic structural units is described. Deuterium labeling studies establish that this one-pot cascade cyclization proceeds through isomerization of olefin, intramolecular C-C bond cyclization, and aromatization as the key intermediates, all occurring in a single step.