tert-butyl (2-(4-bromophenyl)-3-hydroxypropyl)(4-nitrophenylsulfonyl)carbamate

(S)-1-(4-Nitro-benzenesulfonyl)-4-[1-trimethylsilanyl-meth-(Z)-ylidene]-2-vinyl-pyrrolidine

Tert-butyl 2-(4-bromophenyl)allyl(4-nitrophenylsulfonyl)carbamate

tert-butyl (2,2-dimethyl-5-(trimethylsilyl)pent-4-yn-1-yl)((4-nitrophenyl)sulfonyl)carbamate

6-(N-(tert-butoxycarbonyl)-4-nitrophenylsulfonamide)hex-3-yn-2-yl acetate