(2010/02/11)
2-(3,4-difluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-but-2-ene-1,4-diol
tert-butyldimethylsilyl chloride
4-acetoxy-2-(3,4-difluoro-phenyl)-3-(4-methanesulfonyl-phenyl)-but-2-enoic acid 4-(tert-butyl-dimethyl-silanyloxy)-3-(3,4-difluoro-phenyl)-2-(4-methanesulfonyl-phenyl)-but-2-enylester
acetic acid 4-(tert-butyl-dimethyl-silanyloxy)-3-(3,4-difluoro-phenyl)-2-(4-methanesulfonyl-phenyl)-but-2-enyl ester