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Rotational equilibria in 1,2,6‐trisubstituted pyridinium cations and reactions of 2‐Isopropylpyrylium cations
Author(s) -
Katritzky Alan R.,
Vassilatos Socrates N.,
AlajarinCeron Mateo
Publication year - 1983
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/omr.1270211002
Subject(s) - isopropyl , deprotonation , electrophile , chemistry , pyridinium , base (topology) , protonation , medicinal chemistry , isopropyl alcohol , nmr spectra database , computational chemistry , spectral line , organic chemistry , ion , mathematics , mathematical analysis , physics , astronomy , catalysis
Abstract 2‐Isopropyl‐6‐phenyl‐ and 2,6‐diisopropyl‐pyridiniums with bulky 1‐substituents show temperature‐variable NMR spectra which are interpreted in terms of restricted rotation. 2‐Isopropyl‐4,6‐diphenylpyrylium can be deprotonated at the isopropyl group to give an anhydro base which forms new pyryliums with electrophiles.