α-(3,4-dimethoxy-5-nitrophenyl)-2-thiophenemethanol                                                                                                                                                              在
                                                                                                                                         manganese dioxide                                                                                                                                                                                                                               manganese dioxide   、                                                                                                  
dichloromethane hexane                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
丙酮                                                                                  为溶剂,
                                                                                                                                                    反应 4.0h,
                                                                                                                以There is obtained 3,4-dimethoxy-5-nitrophenyl 2-thienyl ketone of m.p. 102°-104° (from methylene chloride/hexane)的产率得到3,4-dimethoxy-5-nitrophenyl thien-2-yl ketone