Novel multicomponent synthesis of 2-OXO-1, 2-diphenylethylidene hydrazinyl thiadiazinyl-2<i>H</i>-chromen-2-one derivatives

Abstract

<p></p> <p>A series of novel 2-oxo-1,2-diphenylethylidene hydrazinyl thiadiazinyl-2<i>H</i>-chromen-2-ones (shown in <a href="#c0001" target="_blank">Scheme 1</a>) have been synthesized via multicomponent approach by the reaction of equimolar amount of benzil (1), thiocarobohydrazide (2), and substituted of 3-(2-bromoacetyl)-2<i>H</i>-chromen-2-ones (3a-i) in a shorter reaction time with good yields. All these compounds were characterized by their spectral and analytical data like IR, ¹H NMR, ¹³C NMR, and mass spectra.</p