Production of levulinic acid专利检索- 羧酸或它们的盐卤化物或酐的制备专利检索查询-专利查询网

Production of levulinic acid
申请号	JP29254189	申请日	1989-11-13	公开(公告)号	JPH02202846A	公开(公告)日	1990-08-10
申请人	Fr Organo Synthese:Soc;			发明人	BERUNAARU KAPE; GI RARUTEIGOO;
摘要	PURPOSE: To easily obtain highly pure and essentially colorless levulinic acid by progressively introducing furfuryl alcohol to a mixture of water as a reaction solvent, strong protonic acid and levulinic acid, and then heating. CONSTITUTION: In the presence of water and a strong protonic acid not acidified under reaction conditions (i.e., protonic acid with an acidity constant Ho lower than -4), furfuryl alcohol is heated to prepare levulinic acid. Furfuryl alcohol is progressively introduced to a mixture of water as a reaction solvent, strong protonic-acid and levulinic acid, for a few minutes to tens of hours, preferably, for 1-12 hours. Here, 1 to 25 mol, preferably, 1.5 to 10 mol of water is used for 1 mol of furfuryl alcohol, 30-100 wt.%, preferably, 50 to 500 wt.% of levulinic acid as a solvent for the whole furfuryl alcohol, and 1 to 50 wt.%, preferably, 2 to 20 wt.% of strong protonic acid for the water. COPYRIGHT: (C)1990,JPO
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