反应详情

The title compound was prepared by the method described above in Examples 1-3. Thus, 7-(4-chlorobutoxy)-4H-1-benzopyran-4-one, as prepared above in Preparation 2, (3.79 g, 15 mmol) was treated with 1-phenylpiperazine (2.59 g; 16 mmol) in the usual way, yielding 3.76 g of 7-[4-(4-phenyl-1-piperazinyl)butoxy-]4H-1-benzopan-4-one.1.5 HCL (H2O), mp 204°-206° C.