Reformatskii reaction on .alpha.-oxo ketene dithioacetals: synthesis of substituted and fused ethyl 2-hydroxy-6-(methylthio)benzoates, 6-(methylthio)pyran-2-ones, and 6-(methylthio)-2(1H)pyridone derivatives
Novel cycloaromatization in reformatsky reaction on ∝-oxoketene dithioacetals: A regioselective synthesis of substituted ethyl 2-hydroxy-6-methylthiobenzoates
A novel cycloaromatization reaction leading to substituted ethyl 2-hydroxy-3-methylthiobenzoates by condensation ∝-oxoketene dithioacetals with excess of Reformatsky reagent from ethyl bromoacetate through intermediate dienes 3 has been reported.