Reaction of 3-cyanochromones with pyridinium phenacylide

…, VS Moshkin, OS El'tsov, VY Sosnovskikh

Index: Kornev, M. Yu.; Moshkin; El'Tsov; Sosnovskikh, V. Ya. Chemistry of Heterocyclic Compounds, 2013 , vol. 48, # 10 p. 1565 - 1567 Khim. Geterotsikl. Soedin., 2012 , vol. 48, # 10 p. 1678 - 1680,3

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Citation Number: 2

Abstract

The reaction of 3-cyanochromones with N-and C-nucleophiles begins with an attack at C-2 atom with subsequent opening of the γ-pyrone ring and recyclization at the C= O or C≡ N groups [1-3]. Nucleophilic 1, 2-addition at the cyano group usually does not occur [1], while the reactions with aromatic amines [4] and methylenetriphenylphosphorane (Ph3P= CH2)[5] terminate at the stage of open products 1 and 2. Since the assumption of a number of ...