Synthesis and structural studies of 5,7(4,6)-di( tert -butyl)-2-(6,8-dimethyl-4-chloroquinolin-2-yl)-1,3-tropolones by quantum-chemical methods and two-dimensional correlation NMR spectroscopy

G. S. Borodkin; A. A. Kolodina; I. V. Dorogan; E. A. Gusakov; I. G. Borodkina; P. B. Chepurnoi; Yu. A. Sayapin

doi:10.1134/S0012500817010049

Synthesis and structural studies of 5,7(4,6)-di(tert-butyl)-2-(6,8-dimethyl-4-chloroquinolin-2-yl)-1,3-tropolones by quantum-chemical methods and two-dimensional correlation NMR spectroscopy

Authors: Borodkin G.S.¹, Kolodina A.A.¹, Dorogan I.V.¹, Gusakov E.A.¹, Borodkina I.G.¹, Chepurnoi P.B.¹, Sayapin Y.A.¹^,2
Affiliations:
1. Institute of Physical and Organic Chemistry
2. Southern Research Center
Issue: Vol 472, No 1 (2017)
Pages: 11-16
Section: Chemistry
URL: https://journals.rcsi.science/0012-5008/article/view/153897
DOI: https://doi.org/10.1134/S0012500817010049
ID: 153897

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Abstract

4,6-Di(tert-butyl)-2-(quinolin-2-yl)-1,3-tropolone (7′) was isolated for the first time from the acid-catalyzed reaction of 2-methyl-substituted nitrogen heterocycles with 1,2-benzoquinones, which proceeds with the expansion of the o-quinone ring to give mainly isomeric 5,7-di(tert-butyl)-2-(quinolin-2-yl)-1,3-tropolone.