M. S. Yagodkina-Yakovenko, A. V. Bol’but, M. Vovk
Oct 1, 2018
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Journal
Russian Journal of Organic Chemistry
Abstract
Methyl 2-(bromomethyl)thiophene-3-carboxylates reacted with substituted 2-hydroxybenzonitriles to give methyl 2-[(2-cyanophenoxy)methyl]thiophene-3-carboxylates which underwent tandem cyclization to benzo[4,5]furo[3,2-b]thieno[2,3-d]pyridin-4(5H)-ones.