(4aR,6R,8aS)-6-(2,5-difluorophenyl)-1-[(4-methoxyphenyl)methyl]-6-[4-(trifluoromethyl)phenyl]sulfonyl-4,4a,5,7,8,8a-hexahydro-3H-benzo[c]thiazine 2,2-dioxide 、
碘乙烷 在
lithium hexamethyldisilazane 作用下,
以
四氢呋喃 为溶剂,
反应 22.0h,
以77%的产率得到(3S,4aR,6R,8aS)-6-(2,5-difluorophenyl)-3-ethyl-1-[(4-methoxyphenyl)methyl]-6-[4-(trifluoromethyl)phenyl]sulfonyl-4,4a,5,7,8,8a-hexahydro-3H-benzo[c]thiazine 2,2-dioxide