Title: Experimental and theoretical study of the [3 + 2] cycloaddition of carbonyl ylides with alkynes.
Journal: Organic & biomolecular chemistry 20121114
Title: Cobalt-catalyzed intermolecular [2 + 2 + 2] cycloaddition for the synthesis of 1,3-cyclohexadienes.
Journal: The Journal of organic chemistry 20080704