Abstract
Thiazolium N-dicyanomethylide and N-phenacylide reacted with methylenecyclopropenes bearing a carbonyl functional group at the 4-position in THF to give novel cage compounds arising from an intramolecular cyclization of the initially formed endo-[3+2] cycloadducts. Although the reaction of the N-dicyanomethylide with a methylenecyclopropene having two cyano groups at the 4-position in THF gave no adduct, the same reaction in an alcohol afforded a cage compound incorporated with the alcohol.
