4-methyl-7-(2-chlorophenyl)-5,6,7,8-tetrahydrocinnolin-5-one   、                                                                                      
肼甲酰亚胺酰胺一氯化氢   、                                                                                      
盐酸                                                                                                                                                              在
                                                                                                                                                                                 
乙醇   、                                                                                                  
7-(2-chlorophenyl)-5-guanidinoimino-4-methyl-5,6,7,8-tetrahydrocinnoline dihydrochloride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 1.5h,
                                                                                                                以to give 7-(2-chlorophenyl)-5-guanidinoimino-4-methyl-5,6,7,8-tetrahydrocinnoline hydrochloride (Compound 129) (0.255 g) as crystals的产率得到7-(2-chlorophenyl)-5-guanidinoimino-4-methyl-5,6,7,8-tetrahydrocinnoline dihydrochloride