Recent Advances in the Tandem Cyclization/Cycloaddition of Allene Intermediates from Copper-Catalyzed Cross-Coupling of Diazo Compounds with Terminal Alkynes

Abstract This short review summarizes the most recent developments (since 2010) in the tandem cyclization/cycloaddition of allene intermediates­, generated from the copper-catalyzed cross-coupling of diazo compounds with terminal alkynes, to afford cyclic compounds. 1 Introduction 2 Cyclization 2.1 Cyclization with Nucleophiles 2.2 Cyclization with Electrophiles 2.3 6π-Electrocyclization 2.4 Other Cyclization 3 Cycloaddition 4 Conclusion