6-fluoro-5-methoxy-4,4-dimethyl-2-trifluoromethyl-1,2,3,4-tetrahydro-naphthalene-1,2-diol 、
N-[[[(benzyloxy)carbonyl]azanide]sulfonyl]-N,N-diethylethylammonium 以
四氢呋喃 为溶剂,
反应 19.0h,
以51%的产率得到7-fluoro-6-methoxy-5,5-dimethyl-2,2-dioxo-3a-trifluoromethyl-3a,4,5,9b-tetrahydro-3-oxy-2λ*6*-thia-1-aza-cyclopenta[a]naphthaline-1-carboxylic acid benzyl ester