Cyclopropanes having vicinal di-substituents such as dimethyl, difluoro or diester gave the best results (products 2ad with 50-78% yield). Both naphthyl and mono substituted cyclopropanes can be used in this transformation, albeit moderate yields were obtained (2d -40% and 2e -55%). Spiro [4.5]decene 2f (54%) and spiro [4.3]octene 2g (44%) could be synthesized from the corresponding spirocyclopropanes. Substrates bearing methoxy or fluorine groups on the benzene ring of the carbonyl group gave similar yields (2h -66% and 2i -64%). We then studied the scope of alkyne partners. In general, electron rich aromatic alkynes gave better results than the electron poor counterparts (see SI for scope limitation). Apart from 3-fluoro and 3-chloro phenyl acetylene, there was no product observed from other electron poor aromatic alkynes. In contrast, [3+2] products were obtained for a wide range of electron donating groups on the benzene ring, such as alkyl, amide, methoxy, phenyl and alkylalcohol (2j -2r, 30 -82% yield). Unfortunately, aliphatic alkynes were not suitable for the reaction, which constituted a limitation when compared to our previous study on energy transfer catalysis. Alkynes bearing extended aromatic systems or heterocycles delivered products 2s-u in moderate yields (35 -45%). During completion of this manuscript, Zhang and co-workers reported the same [3+2] annulation with ethanol as a solvent. Nevertheless, our study presents a broader range of alkyne coupling partners. In fact, there are only two identical substrates present in both works. Therefore, we believe that adding our own results on this transformation will be still useful for the synthetic community.