1-Bromo-1,1-ditert-butyl-1lambda5-phosphetane 在
ammonium hexafluorophosphate 作用下,
以
水 为溶剂,
以88%的产率得到((1aS,8S,8aR,8bS)-4-((ethoxycarbonyl)oxy)-8a-methoxy-5-methyl-7-oxo-1,1a,2,8,8a,8b-hexahydro-7H-spiro[azirino[2',3':3,4]pyrrolo[1,2-a]indole-6,2'-[1,3]dioxolan]-8-yl)methyl carbamate