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    • 10. 发明授权
    • Hydrogenated 5-carbon compound and method of making
    • 氢化5碳化合物及其制备方法
    • US5883266A
    • 1999-03-16
    • US8356
    • 1998-01-16
    • Douglas C. ElliottJohn G. Frye
    • Douglas C. ElliottJohn G. Frye
    • C07D307/06C07D307/33C07D309/00C07C27/00C07D307/02
    • C07D307/33C07D307/06
    • The present invention is based upon the surprising discovery that a 5-carbon compound selected from the group of 4-oxopentanoic acid, at least one lactone of 4-oxopentanoic acid, and combinations thereof, may be hydrogenated with a bimetallic catalyst of a noble metal in combination with a second metal and preserve the pendant methyl group. It was further unexpectedly discovered that the same conditions of bimetallic catalyst in the presence of hydrogen are useful for catalyzing the different intermediate reactions for example angelicalactone to gamma-valerolactone and gamma-valerolactone to 1,4-pentanediol. Finally, it was surprising that levulinic acid could be converted to 2-methyltetrahydrofuran with heating in the presence of the bimetallic catalyst and hydrogen in a single process vessel. The method of the present invention unexpectedly produced a fuel or fuel component having 2-methyltetrahydrofuran either in a yield greater than 4.5 mol % or in combination with alcohols.
    • 本发明基于惊人的发现,即选自4-氧代戊酸,至少一种4-氧代戊酸的内酯的5-碳化合物及其组合可以用贵金属的双金属催化剂氢化 与第二金属组合并保护侧甲基。 进一步出人意料地发现,在氢存在下,相同条件的双金属催化剂可用于催化不同的中间反应,例如天然内酯至γ-戊内酯和γ-戊内酯至1,4-戊二醇。 最后,令人惊讶的是,在双金属催化剂和氢气存在下,乙酰丙酸可以在单一工艺容器中加热转化为2-甲基四氢呋喃。 本发明的方法意外地产生具有2-甲基四氢呋喃的燃料或燃料组分,其产率大于4.5mol%或与醇组合。