Generation of the furan analogue of ortho-quinodimethane by 1,4-elimination of 3-acetoxymethyl-2-tributylstannylmethylfuran
Abstract
2,3-Dimethylene-2,3-dihydrofuran is generated in situ by boron trifluoride induced 1,4-conjugative elimination of tributylstannylmethyl acetate and then trapped with dienophiles to give the corresponding Diels–Alder cycloadducts.