초록 |
We synthesized a new microporous crosslinked copolymer particle from styrene and new monomer in the presence of divinyl benzene by a suspension polymerization. The microporous polymer was used as a polymer reagent for conventional organic reductions: nitrobenzene and its derivatives(o-ethyl nitrobenzene, o-methyl nitrobenzene and so on) were reduced in high yield by using a Zn/NH4Cl system in water in the presence of the prepared copolymer particles without any organic solvent at mild condition. Unlike a conventional reduction utilizing the Zn/NH4Cl system, the use of polymer reagent enables the highly selecrive reduction of nitrobenzene derivatives to hydrazobenzene, azobenzene, and azoxybenzene compounds. |