An efficient, simple and green one-pot domino protocol for the synthesis of benzo[g]chromene-5,10-diones has been synthesized by multi-component condensation of 2-hydroxy-1,4-naphthoquinone with aldehydes and (E)-N-methyl-1-(methylthio)-2-nitroethenamine in the presence of silica-supported tungstic acid (STA), affording excellent yields under neat conditions. This transformation presumably occurs through a sequential aldol reaction, Michael addition, imine-enamine tautomerism-intramolecular, O-cyclization, elimination sequence of reactions. The significant features of this reaction include short reaction time, high yields, eco-friendly method, and no need column chromatography technique. Furthermore the catalyst can be recycled up to four times without losing its catalytic activity.