1-iodo-3-methoxymethyl-8-[2-(4-trifluoromethylphenyl)ethyl]-5,6-dihydro-8H-imidazo[1,5-a]pyrazine-7-carboxylic acid tert-butyl ester   、                                                                                      
methanol-dichloromethane                                                                                                                                                              在
                                                                                                                                                                                 
1-chloro-3-methoxymethyl-8-[2-(4-trifluoromethylphenyl)ethyl]-5,6-dihydro-8H-imidazo[1,5-a]pyrazine-7-carboxylic acid tert-butyl ester                                                                                                                                  作用下,
                                                                                                                                                                                                                            以gave the expected product 1-chloro-3-methoxymethyl-8-[2-(4-trifluoromethyl-phenyl)-ethyl]-5,6-dihydro-8H-imidazo[1,5-a]pyrazine-7-carboxylic acid tert-butyl ester as an orange oil (254 mg; 42%)的产率得到1-chloro-3-methoxymethyl-8-[2-(4-trifluoromethylphenyl)ethyl]-5,6-dihydro-8H-imidazo[1,5-a]pyrazine-7-carboxylic acid tert-butyl ester