Facile synthetic route to benzo[<i>c</i>]chromenones and thieno[2,3-<i>c</i>]chromenones

<p>Convenient two-step procedure for the synthesis of fused chromenone derivatives was developed. Reduction of the obtained in the Meerwein arylation reaction aryl- and thienylquinones allowed to construct 6<i>H</i>-benzo[<i>c</i>]chromene-6-ones and 4<i>H</i>-thieno[2,3-<i>c</i>]chromen-4-one in a more cost- and time-effective manner in comparison with already known methods. The obtained products have provided a new entry to chromenone derivatives.</p