Acetic acid (S)-1-((3aR,4S,6S,6aR)-2,2-dimethyl-6-phenylsulfanyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl)-ethyl ester 在
N-溴代丁二酰亚胺(NBS) 、
氟化氢吡啶 作用下,
以71%的产率得到Acetic acid (S)-1-((3aR,4S,6S,6aR)-6-fluoro-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl)-ethyl ester