METHOD FOR PRODUCING BINAPHTHYL CARBOXYLIC ACID

METHOD FOR PRODUCING BINAPHTHYL CARBOXYLIC ACID

An object is to provide a novel method for producing 2,2'-bis(carboxymethoxy)-1,1'-binaphthyl suitable as a resin raw material having excellent optical properties. As a solution, a method for producing 2,2'-bis(carboxymethoxy)-1,1'-binaphthyl, including a step (1) of performing c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SUTO, Takeru, SAKUMA, Daichi, TSUCHIYA, Shinichi
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:An object is to provide a novel method for producing 2,2'-bis(carboxymethoxy)-1,1'-binaphthyl suitable as a resin raw material having excellent optical properties. As a solution, a method for producing 2,2'-bis(carboxymethoxy)-1,1'-binaphthyl, including a step (1) of performing crystallization, wherein the amount of water in a solution containing 2,2'-bis(carboxymethoxy)-1,1'-binaphthyl and one or more selected from linear or branched aliphatic ketones having 5 to 8 carbon atoms is in the range of 2.0 wt% or less and 0.01 wt% or more, is provided.