SEPARATION AND CONCENTRATION OF 2,6-DIMETHYLNAPHTHALENE AND REAGENT FOR SEPARATION AND CONCENTRATION

SEPARATION AND CONCENTRATION OF 2,6-DIMETHYLNAPHTHALENE AND REAGENT FOR SEPARATION AND CONCENTRATION

PURPOSE:To provide a new method for separating the subject compound at low cost by bringing a specified mixture into contact with alpha-cyclodextrin and forming an alpha-cyclodextrin clathrate of 2,6-dimethylnaphthalene. CONSTITUTION:A mixture containing 2,6-dimethylnaphthalene is brought into conta...

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1. Verfasser: UEMASU ISAMU
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
ORGANIC MACROMOLECULAR COMPOUNDS
POLYSACCHARIDES
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Zusammenfassung:PURPOSE:To provide a new method for separating the subject compound at low cost by bringing a specified mixture into contact with alpha-cyclodextrin and forming an alpha-cyclodextrin clathrate of 2,6-dimethylnaphthalene. CONSTITUTION:A mixture containing 2,6-dimethylnaphthalene is brought into contact with a substituted alpha-cyclodextrin synthesized by substituting H of OH in alpha-cyclodextrin with glucosyl, maltosyl, methyl, sulfonic acid, a carboxylalkyl, etc., preferably at 20 to 30 deg.C for several to several ten minutes so as to form an alpha-cyclodextrin clathrate of 2,6-dimethylnaphthalene. The resultant complex is heated at 60 to 70 deg.C so as to liberate 2,6-dimethylnaphthalene and these processes are repeated, thus producing the objective compound of high purity.