Reaction of 2-methylquinoline with 3-phenylprop-2-ynenitrile in the KOH—H2O system
- Authors: Belyaeva K.V.1, Nikitina L.P.1, Afonin A.V.1, Vashchenko A.V.1, Trofimov B.A.1
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Affiliations:
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
- Issue: Vol 66, No 12 (2017)
- Pages: 2258-2263
- Section: Full Article
- URL: https://journals.rcsi.science/1066-5285/article/view/241759
- DOI: https://doi.org/10.1007/s11172-017-2011-5
- ID: 241759
Cite item
Abstract
The reaction of 2-methylquinoline with 3-phenylprop-2-ynenitrile in the presence of water (0—25 °C, 20 mol.% KOH, 5 equiv. H2O) is accompanied by the loss of aromaticity of the quinoline nucleus and results in double functionalization of the molecule at the nitrogen atom and the methyl group. Two 2-cyano-1-phenylethenyl groups were introduced into the molecule to form (2E,4E)-4-{1-[(Z)-2-cyano-1-phenylethenyl]quinolin-2(1H)-ylidene}-3-phenylbut-2-enenitrile in 59—67% yield. This reaction is stereoselective: the N-2-cyano-1-phenylethenyl-substituent has the Z-configuration, while the 1,3-diene moiety at the methyl group has the E,E-configuration. (2E)-3-Phenyl-4-(quinolin-2-yl)but-2-enenitrile that formed as a by-product (0—24% yields) is formally the addition product of the methyl group of the quinoline substrate at the acetylenic bond.
About the authors
K. V. Belyaeva
A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
Email: boris_trofimov@irioch.irk.ru
Russian Federation, 1 ul. Favorskogo, Irkutsk, 664033
L. P. Nikitina
A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
Email: boris_trofimov@irioch.irk.ru
Russian Federation, 1 ul. Favorskogo, Irkutsk, 664033
A. V. Afonin
A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
Email: boris_trofimov@irioch.irk.ru
Russian Federation, 1 ul. Favorskogo, Irkutsk, 664033
A. V. Vashchenko
A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
Email: boris_trofimov@irioch.irk.ru
Russian Federation, 1 ul. Favorskogo, Irkutsk, 664033
B. A. Trofimov
A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences
Author for correspondence.
Email: boris_trofimov@irioch.irk.ru
Russian Federation, 1 ul. Favorskogo, Irkutsk, 664033