A Convenient Synthesis of Δ7,8-Morphinan-6-one and Its Direct Oxidation to 14-Hydroxy-Δ7,8-morphinan-6-one
                                
                                    
                                        作者:Daniele Passarella、Alessandra Consonni、Alessandra Giardini、Giordano Lesma、Alessandra Silvani                                    
                                    
                                        DOI:10.1016/s0960-894x(02)00280-9
                                    
                                    
                                        日期:2002.8
                                    
                                    Synthesis of Delta(7,8)-morphinan-6-one by Grewe cyclization and bromoketalization reaction as crucial steps is described. Introduction of a hydroxyl group at 14-position is demonstrated by direct oxidation with MnO2 in the presence of silica gel. (C) 2002 Elsevier Science Ltd. All rights reserved.