acetonitrile-water   、                                                                                      
1-(2,3,4,5-Tetrahydro-1H-benzofuro[3,2-c]azepin-8-yl)-4-((6-(trifluoromethyl)pyridin-3-yl)methoxy)pyridin-2(1H)-one                                                                                                                                                              在
                                                                                                                                                                                 
盐酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醚                                                                                  为溶剂,
                                                                                                                                                                                        以97%的产率得到1-(2,3,4,5-tetrahydro-1H-benzofuro[3,2-c]azepin-8-yl)-4-((6-(trifluoromethyl)pyridin-3-yl)methoxy)pyridin-2(1H)-one hydrochloride