A novel approach to conformationally restricted analogues of nicotine and anabasine by an intramolecular Hamaguchi–Ibata reaction
                                
                                    
                                        作者:Tarun K Sarkar、Sankar Basak、Sunil K Ghosh                                    
                                    
                                        DOI:10.1016/s0040-4039(99)02148-6
                                    
                                    
                                        日期:2000.1
                                    
                                    A short synthesis of methyl (SR)-8,10-dichloro-1,2,3,4,5,6-hexahydro-6-hydroxy-1-methyl-1,9-phenanthroline-6-carboxylate (14) has been achieved en route to conformationally restricted analogues of nicotine and anabasine. The key feature of this process involves an efficient intramolecular Hamaguchi-Ibata reaction of 11. (C) 2000 Elsevier Science Ltd. All rights reserved.