Open AccessINTERACTION OF KETO- AND TERTIARY AMINO-FUNCTION IN MEDIUM RINGS
Author(s) -
Edward H. Mottus,
Hans Schwarz,
Léo Marion
Publication year - 1953
Publication title -
canadian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.323
H-Index - 68
eISSN - 1480-3291
pISSN - 0008-4042
DOI - 10.1139/v53-148
Subject(s) - protopine , chemistry , ring (chemistry) , infrared spectroscopy , spectral line , stereochemistry , organic chemistry , alkaloid , physics , astronomy
The ultraviolet and infrared absorption spectra of protopine and some of its derivatives have been studied. The interaction between a keto group and a tertiary nitrogen in a 10-membered ring is illustrated by the study of these spectra. On the basis of these studies a quaternary carbinolamine structure (V) is suggested for protopine and cryptopine salts. Some of the reactions of protopine, cryptopine, and vomicine are discussed.