Title:
PRODUCTION OF SINGLE ISOMER OF ALICYCLIC COMPOUND
Document Type and Number:
Japanese Patent JP3879886
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce the subject compound utilzable as an optical material excellent in heat and moisture resistances and transparency and useful as an additive for general-purpose resins, various structural material resins, etc., by hydrolyzing a specific alkyl alicyclic carboxylate in the presence of an alkali metal hydroxide at a specified temperature.
SOLUTION: An alkyl alicyclic carboxylate comprising an isomeric mixture of an alkyl alicyclic endo-carboxylate represented by the formula (R is an alkyl) with an alkyl alicyclic exa-carboxylate is hydrolyzed in the presence of an alkali metal hydroxide at 0-120°C for preferably 2-10 h to selectively hydrolyze and convert the alkyl alicyclic exo-carboxylate into an alicylic exo- carboxylic acid. Furthermore, the resultant alicyclic exo-carboxylic acid is then separated from the mixture of the alicyclic exo-carboxylic acid with the unreacted alkyl alicyclic endo-carboxylate to thereby afford the single isomer of the alicyclic compound.
Inventors:
Hiroshi Fujita
Hideki Kobayashi
Ryuji Tsuno
Hideki Kobayashi
Ryuji Tsuno
Application Number:
JP11794298A
Publication Date:
February 14, 2007
Filing Date:
March 31, 1998
Export Citation:
Assignee:
Arakawa Chemical Industry Co., Ltd.
International Classes:
C07C51/42; C07C61/29; C07C27/02; C07C67/60; C07C69/753; (IPC1-7): C07C61/29; C07C27/02; C07C51/42; C07C67/60; C07C69/753
Domestic Patent References:
| JP11265067A | ||||
| JP9194433A | ||||
| JP9020724A | ||||
| JP4009340A | ||||
| JP11228491A | ||||
| JP55085537A |