METHOD FOR PRODUCING 2,4,4-TRIMETHYL-2',4',7-TRIHYDROXYFLAVAN

METHOD FOR PRODUCING 2,4,4-TRIMETHYL-2',4',7-TRIHYDROXYFLAVAN

PROBLEM TO BE SOLVED: To provide a method for efficiently producing 2,4,4-trimethyl-2',4',7-trihydroxyflavan. SOLUTION: The method for producing the 2,4,4-trimethyl-2',4',7-trihydroxyflavan by reacting resorcin with acetone in the presence of an acid catalyst includes using the 2...

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1. Verfasser: NUNO TATSUMI
Format: Patent
Sprache:eng
Schlagworte:
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method for efficiently producing 2,4,4-trimethyl-2',4',7-trihydroxyflavan. SOLUTION: The method for producing the 2,4,4-trimethyl-2',4',7-trihydroxyflavan by reacting resorcin with acetone in the presence of an acid catalyst includes using the 2,4,4-trimethyl-2',4',7-trihydroxyflavan having 70-90% of purity as a seed crystal. COPYRIGHT: (C)2011,JPO&INPIT