methyl 4-bromo-2,3-dihydro-5-hydroxy-6-methyl-3-(phenoxycarbonyloxymethyl)benzofuran-2-carboxylate                                                                                                                                                              在
                                                                                                                                                                                 ammonium cerium(IV) nitrate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 0.25h,
                                                                                                                以80%的产率得到methyl 3-(2-bromo-4-methyl-3,6-dioxo-1,4-cyclohexadienyl)-2-hydroxy-4-(phenoxycarbonyloxy)butyrate