8-Bromo-5-ethoxy-6-(7-methoxy-3-oxo-1,3-dihydro-isobenzofuran-1-yl)-3,4-dihydro-1H-naphthalene-2,2-dicarboxylic acid diethyl ester                                                                                                                                                              在
                                                                                                                                         palladium on activated charcoal                                                                                                                                                                                                                               
氢气                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
溶剂黄146                                                                                  为溶剂,
                                                                                                                                                                                        以91%的产率得到6-(2-Carboxy-6-methoxy-benzyl)-5-ethoxy-3,4-dihydro-1H-naphthalene-2,2-dicarboxylic acid diethyl ester