3-Bromo-2-hydroxybenzaldehyde

R-(-)-Dihydro-5-(p-tolylsulfonyloxymethyl)-2(3H)-furanone

5-Methoxy-2-nitrobenzaldehyde

5-Methoxy-2-nitrobenzaldehyde

4-Chloro-3-chlorosulfonylbenzoic acid

Methyl 4-fluoro-3-nitrobenzoate

Cyclo-isopropylidene dibromomalonate