rac-4-((1R,2S,6S,7R,8S)-8-hydroxy-3,3-dioxido-10-oxa-3-thia-4-azatricyclo[5.2.1.0(2,6)]dec-4-yl)-2-(trifluoromethyl)benzonitrile 、
4-((1R,2S,6S,7S,9R)-9-hydroxy-3,3-dioxido-10-oxa-3-thia-4-azatricyclo[5.2.1.0(2,6)]dec-4-yl)-2-(trifluoromethyl)benzonitrile 在
二乙胺基三氟化硫 作用下,
以
二氯甲烷 为溶剂,
以9%的产率得到4-((1R,2S,6S,7R,8R)-8-fluoro-3,3-dioxido-10-oxa-3-thia-4-azatricyclo[5.2.1.0(2,6)]dec-4-yl)-2-(trifluoromethyl)benzonitrile