Optical resolution of the racemic modification of 2,2'-bis(diphenylphosphino)-1,1'-binaphthyldioxide

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United States of America Patent

PATENT NO 4564708
SERIAL NO

06582710

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Abstract

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D-2,2'-bis(diphenylphosphino)-1,1'-binaphthyldioxide and 1-2,2'-bis(diphenylphosphino)-1,1'-binaphthyldioxide are produced by reacting d1-2,2'-bis(diphenylphosphino)-1,1'-binaphthyldioxide with optically active camphor-10-sulfonic acid or optically active 3-bromo-camphor-10-sulfonic acid as a resolving agent in a lower alkyl ester of acetic acid containing a lower alkyl carboxylic acid, thereby forming diastereomeric salts, and optically resolving said diastereomeric salts.

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TAKASAGO PERFUMERY CO LTD 19-22 TAKANAWA 3-CHOME MINATO-KU TOKYO JAPANNot Provided

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Inventor Name Address # of filed Patents Total Citations
Akutagawa, Susumu Kanagawa, JP 25 306
Yagi, Misao Kanagawa, JP 13 62

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