The strategy for Co2(CO)8-catalyzed double carbonylative [2 + 2 + 1] cycloaddition or [2 + 2 + 2] cycloaddition reaction of triynes: a new synthetic method for tetracyclic compounds†
Abstract
Novel tetracyclic compounds containing cyclopentenones have been constructed by the cobalt octacarbonyl-catalyzed double [2 + 2 + 1] cycloaddition reaction of