Benzoic acid 5-[6,7-dimethoxy-2-(2,2,2-trifluoro-acetyl)-1,2,3,4-tetrahydro-isoquinolin-1-ylmethyl]-2-methoxy-phenyl ester                                                                                                                                                              在
                                                                                                                                                                                 lithium perchlorate   、                                                                                                  
sodium carbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                                                        以56%的产率得到Benzoic acid 3,11-dimethoxy-2-oxo-7-(2,2,2-trifluoro-acetyl)-2,5,6,7,7a,8-hexahydro-dibenzo[d,f]indol-10-yl ester