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Novel Iminocoumarin Derivatives: Synthesis, Spectroscopic and Computational Studies

“…Iminocoumarin is a subclass of coumarin family [23], and very few reports are available in the literature describing the optical properties of iminocoumarins [24][25][26]. The reported iminocoumarin derivatives bear an electron-releasing group in the 7-position and an electron-acceptor group in the 3-position, a choice probably justified by the fact that this substitution pattern leads to enhanced absorption and fluorescence efficiency in the closely related coumarin series.…”

Synthesis and electronic spectra of 3‐hetaryl substituted coumarin derivatives 7‐hydroxy‐2H‐chromen‐2‐on and 9‐hydroxy‐2H‐benzo(f)chromen‐2‐on

“…The presence of 2H‐chromene moieties in a number of biologically active substances makes the synthesis of their new analogues of great importance for further study and clarification of the chemotherapeutic properties and reactivity of these compounds. The reactivity of the imino group in iminocoumarins is very high, which makes them excellent precursors for reactions with N ‐nucleophiles [17,18], aromatic aldehydes [19] and other reactive compounds. The iminocoumarins are easily hydrolysed to coumarins [20,21].…”

Synthesis of novel 3‐hetaryl‐substituted 6‐ and 8‐hydroxybenzo[f]coumarin derivatives

“…The presence of the 2H‐chromene moiety in a variety of biologically active compounds makes the synthesis of various analogues important in order to study their properties and reactivity. The reactivity of these iminocoumarins is very high and makes them excellent precursors for reactions with N ‐nucleophiles [6,7], aromatic aldehydes [8] and other reactive compounds. The iminocoumarins easily hydrolyse to the corresponding coumarins [9,10].…”