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Odeur et constitution XI. Etude de la transestérification-déshydratation de la lactone de l'acide tétraméthyl-1,1,6,10-hydroxy-6-décalyl-5-acétique

✍ Scribed by M. Stoll; M. Hinder

Publisher: John Wiley and Sons
Year: 1954
Tongue: German
Weight: 498 KB
Volume: 37
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19540370632

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✦ Synopsis

Abstract

The transesterification‐dehydration of lactone I (of 1, 1, 6, 10‐tetramethyl‐6‐hydroxy‐decalyl‐5‐acetic acid) yields besides small quantities of isolactone II the ester of the corresponding non saturated acid III. Prolonged heating in the presence of more concentrated sulfuric acid isomerizes this acid into acid IV. If the concentration of the latter reaches 45%, saponification of the reaction products yields no more the acids III m. p. 118° or IV m. p. 102° but an eutectic acid m. p. 84°. The corresponding infrared spectra are discussed.

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