Karl Anker Jørgensen

Modern Higher-OrderCycloadditions

Abstract Higher-order cycloadditions, defined as pericyclic reactions involving more than 6π-electrons, have emerged as powerful and mechanistically diverse reactions that allow for the construction of larger and more complex polycyclic ring systems beyond the classical Diels–Ald...

Divergent concerted and stepwise cycloadditions via enantioselective cross-conjugated iminium-ion catalysis

Cycloadditions are described as either concerted or stepwise processes, where a catalyst can influence both the mechanism and the peri-, regio- and stereoselectivity. We report experimental and DFT-computational investigations that reveal the versatile reactivities of cross-conju...