Study of the diastereoisomers formed between (N-alkyl)-pipecolic acid-anilides and 2R,3R-tartaric acid or O,O′-dibenzoyl-2R,3R-tartaric acid.

Nemák, Katalin and Acs, Mária and Mártonffyné Jászay, Zsuzsa and Kozma, Dávid and Fogassy, Elemér (1996) Study of the diastereoisomers formed between (N-alkyl)-pipecolic acid-anilides and 2R,3R-tartaric acid or O,O′-dibenzoyl-2R,3R-tartaric acid. TETRAHEDRON, 52 (5). pp. 1637-1642. ISSN 0040-4020

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Abstract

It was found that during the optical resolution of (N-alkyl)-pipecolic acid-anilides by 2R,3R- tartaric acid and O,O′-dibenzoyl-2R,3R-tartaric acid that the precipitated diastereoisomer was not the salt but a diastereoisomeric complex in 8 cases from 13. The results indicate that tartaric acids may be used as general resolving agents for optical resolution of racemates even having no basic group.

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