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Synthesis of benzofuro[3,2-b]furo[2,3-d]pyridin-4(5H)-ones, derivatives of a novel heterocyclic system

Heterocycl. Commun. 2018, 24 (4), 177-181

DOI: 10.1515/hc-2017-0143

Yahodkina-Yakovenko M.; Bol'but A.; Vovk M.

Methyl 2-[(cyanophenoxy)methyl]-3-furoates obtained from methyl 2-(chloromethyl)-3-furoate and salicylonitriles undergo tandem cyclization in the presence of excess t-BuOK in N,N-dimethylformamide (DMF) solution at 65°C to give substituted benzofuro[3,2-b]furo[2,3-d]pyridin-4(5H)-ones, derivatives of a novel heterocyclic system.

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