1-(3a,8-dimethyl-3,3a,8,8a-tetrahydropyrrolo[2,3-b]indol-1(2H)-yl)-2-(2-methyl-1H-benzo[d]imidazol-1-yl)ethan-1-one   、                                                                                      
2-溴溴苄                                                                                                                                                                                              以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                                                        以73%的产率得到3-(2-bromobenzyl)-1-(2-(3a,8-dimethyl-3,3a,8,8a-tetrahydropyrrolo[2,3-b]indol-1(2H)-yl)-2-oxoethyl)-2-methyl-1H-benzo[d]imidazol-3-ium bromide