3,4-dihydro-6,7-dimethoxy-1-undecylisoquinoline   、                                                                                      
3,4-bis(ethoxycarbonylamino)benzyl chloride                                                                                                                                                              在
                                                                                                                                                                                 silica   、                                                                                                  
二氯甲烷   、                                                                                                  
甲醇   、                                                                                                  6,7-dimethoxy-2-(3,4-diethylacohol carbonylaminophenyl)methyl-3,4-dihydro-1-undecylisoquinolinium chloride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 5.0h,
                                                                                                                以to give 0.40 g of solid compound, 6,7-dimethoxy-2-(3,4-diethylacohol carbonylaminophenyl)methyl-3,4-dihydro-1-undecylisoquinolinium chloride (m.p. 147° C.)的产率得到6,7-dimethoxy-2-(3,4-bis(ethoxy Carbonylamino)phenyl)methyl-3,4-dihydro-1-undecylisoquinolinium chloride