Journal
JOURNAL OF ORGANOMETALLIC CHEMISTRY
Volume 691, Issue 7, Pages 1356-1360Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2005.09.046
Keywords
ferrocene; heterocycle; cyanopyridine; ultrasound irradiation
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An efficient synthesis of 2-alkoxy-4-aryl-6-ferrocenyl-3-cyanopyridines via the condensation of ferrocenyl substituted chalcones with malononitrile in a freshly prepared sodium alkoxide solution under ultrasound irradiation was investigated. Especially noteworthy, the reaction of 1-ferrocenyl-3-(pyridin-2-yl)prop-2-ene-1-one with malononitrile afforded 2-alkoxy-4-pyridyl-6-ferrocenylpyridine, with the loss of CN group on the 3-position of pyridine ring was first observed. (c) 2005 Elsevier B.V. All rights reserved.
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