摘要:
The 2,5-furanocyclododecenes 16, 20, and 24 have been prepared by a new route involving intramolecular S(E)' addition of propargylic stannanes 3, 6, and 9 then exposure of the derived allenones 14, 19, and 23 to AgN-O3-CaCO3 in aqueous acetone at room temperature.