Novel Aspects of the Reaction of 3-(Benzimidazol-2-yl)-2-iminocoumarins with Aromatic Aldehydes

The synthesis and optical characterization of novel iminocoumarin derivatives

“…1). Recently, several groups reported the condensation reaction between the aromatic aldehydes with 3-benzimidazol-2-yl-2-iminocoumarin to produce a rigid molecular structure 2 [13,14], or condensed the same synthon with malononitrile to produce a rigid benzopyran 3 [15] (Fig. 1).…”

One-Pot Microwave-Assisted Synthesis of a Benzopyrano[2,3-c]pyrazol-3(2H)-one Library

“…Modern methodology applies the reactivity of 2-iminocoumarine (2-imino-2 H -chromene) derivatives in reaction with different nucleophiles and electrophiles for construction of heterocyclic systems containing the coumarine (benzopyrane, 2 H -chromen-2-one) moiety. The products of these reactions are used as bioactive compounds or luminescent dyes for different needs.…”

“…The products of these reactions are used as bioactive compounds or luminescent dyes for different needs. In continuation of our works on utilization of the 2-iminocoumarine reactivity for the synthesis of diverse benzopyranes fused with nitrogen containing heterocycles, here, we present a facile one-pot microwave-assisted protocol for fast generation of a benzopyrano[2,3- c ]pyrazol-3(2 H )-one library.…”