A new route to the regioisomeric 2-alkylnaphtho [2, 1-b]-and 2-alkylnaphtho [1, 2-b] furans via acid-catalyzed cyclization of the corresponding 2-naphthyloxyalkanals under mild conditions over Amberlyst 15 resin has been described. The 2-naphthyloxyalkanals were obtained by palladium-catalyzed reduction of 2-naphthyloxyalkanoyl chlorides.
