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Abstract
Cyclopropenes possess very high strain energies1 and their organic and organometallic chemistry has been widely studied. They are reactive dienophiles in the Diels-Alder reaction,2 and they undergo ring opening reactions under vigorous photochemical3 and thermal4 conditions.5 Transition metal promoted ring opening reactions of cyclopropenes occur under very mild conditions,6 and have also been the subject of a theoretical study.7