9,22-Dioxo-7,8,9,10,11,12,20,21,22,23,24,25-dodecahydro-6H,19H-5,13,18,26-tetraoxa-dibenzo[a,l]cyclodocosene-8,21-dicarboxylic acid diethyl ester                                                                                                                                                              在
                                                                                                                                                                                 
盐酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 36.0h,
                                                                                                                生成                                                 
9,22-Dioxo-7,8,9,10,11,12,20,21,22,23,24,25-dodecahydro-6H,19H-5,13,18,26-tetraoxa-dibenzo[a,l]cyclodocosene-8-carboxylic acid ethyl ester