| 摘要 |
<p>PURPOSE:To prepare the title compound useful as a raw material of polyurethane, in high yield, by reacting an aromatic nitro compound with an organic OH-containing compound in the presence of Se- or Se-compound catalyst, a base and hydrogen gas. CONSTITUTION:A urethane is prepared by reacting an aromatic nitro compound (e.g. nitrobenzene) with an organic OH-containing compound (e.g. monohydric alcohol, such as methanol, ethanol, etc.) and CO (atmospheric pressure to 200 kg/cm<2>G) in the presence of a catalyst comprising Se or Se compound (e.g. Se, SeO2, etc.), a base (e.g. Li acetate, Na acetate) and H2, pref. at 120-200 deg.C. EFFECT:Urethane can be obtained in high yield even by recycling and reusing the catalyst.</p> |
