It has been established that a cationic rhodium(I)/(R)-tol-BINAP or (R)-BINAP complex catalyzes the enantioselective [2 + 2 + 1] cycloaddn. of 1,6-enynes, possessing monosubstituted alkene units, with cyclopropylideneacetamides at room temp. through the elimination of ethylene to give bicyclic (cyclopent-2-en-1-ylidene)acetamides with high enantioselectivity. [on SciFinder(R)]