Synthesis of Chiral 1,2‐Dihydronaphtho[2,1‐b]furans by Organocatalytic Domino Reactions Catalyzed with Multiple Catalysis.

A chiral multiple catalysis with two chiral units has been proved effective in the domino Friedel–Crafts alkylation of β-naphthols with α-bromonitroalkenes. This novel and efficient domino reaction affords chiral 1,2-dihydronaphtho[2,1-b]furans in good to high yields and enantioselectivities (up to 93 % yield, 91 % enantiomeric excess).