反应详情

4.15 g of 2-(2-naphthyl)-5-oxo-6-phthalimidoperhydro-1,4-thiazepine [prepared as described in step (e) above] were treated with t-butyl bromoacetate in same manner as described in Example 36(f), to give 3.35 g of the title compound as a crystalline solid, melting at 208°-209.5° C.