An Efficient Synthesis of 5,6-Dimethoxy 1- and 2-Naphthols<i>via</i>Teuber Reaction
                                
                                    
                                        作者:Jia-hua Cui、Shao-shun Li                                    
                                    
                                        DOI:10.1002/jccs.201300065
                                    
                                    
                                        日期:2013.9
                                    
                                    AbstractBased on the oxidation of 1,5‐naphthalenediol (4) and 6‐bromo‐2‐naphthol (9) via Teuber reaction, an efficient synthesis of 5,6‐dimethoxy‐1‐naphthol (1) and 5,6‐dimethoxy‐2‐naphthol (2) was achieved with high overall yield (16% for 1 and 25% for 2). The key steps of the synthetic strategy involved the oxidation of naphthols (4 and 9) to the corresponding naphthoquinones (5 and 10) and the conversion of 5,6‐dimethoxy‐2‐naphthaldehyde to 5,6‐dimethoxy‐2‐naphthol formate through Baeyer‐Villiger oxidation‐rearrangement.