A clean synthesis of novel 3-alkoxy-2-(benzofuran-3-yl)benzofurans via a one-pot pseudo three-component reaction using H3PW12O 40 · xH2O as a Catalyst
H3PW12O40 · xH2O efficiently catalyzes the one-pot pseudo three-component reaction of benzofuran- 3(2H)-ones and various alcohols to afford the corresponding bibenzofuran derivatives with various alkoxy groups in 3-position.