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the title compounds starting from readily available tertiary α-hydroxyketones 1a,b ( Scheme 1 ). Scheme 1 The condensation of α-hydroxyketones 1a,b with cyanoacetamides 2a–d in the presence of a catalytic amount of sodium methoxide afforded 2-imino-2,5-dihydrofuran-3-carboxamides 3a–f that, without isolation, were hydrolized to 2,5-dihydro-2-oxofuran-3-carboxamides 4a–f in good yields. The products 4a–f are unsubstituted or substituted at the carboxamide nitrogen atom. Several syntheses of 2,5-dihydro-2-oxofuran-3-carboxamides have been reported in the

,5-dihydrofurans (Villemin and Liao, 2001, 2003; Avetissyan and Karapetyan, 2009; Avetisyan et al., 2009a,b, 2010, Avetisyan and Karapetyan, 2010; Cheikh et al., 2011) has been of continuous interest in the development of efficient and convenient methods for preparation of various 2,5-dihydrofuran derivatives and in their synthetic applications. To determine new synthetic capabilities of 2-imino-2,5-dihydrofuran-3-carboxamides 1a–d (Avetissyan and Karapetyan, 2009), we studied the interaction of iminolactones with primary amines which is known in coumarin series (Zubkov et al