Synthesis of pyrano[3,2-c]chromen-5-ones have been synthesized by an efficient, simple and green one-pot domino protocol by multi-component condensation of 4-hydroxycoumarin, aldehydes and (E)-N-methyl-1-(methylthio)-2-nitroethenamine in the presence of a catalytic amount of silica-supported tungstic acid (STA) under solvent-free conditions. The salient features of this protocol are simple reaction procedure, shorter reaction time, good yields, avoidance of aqueous work-up, and column chromatographic separation. The merit of this process is highlighted by its high bond efficiency of producing three new bonds and one stereocenter in a single operation.