Liu, Qiang N-Heterocyclic Carbene Catalyzed Quadruple Domino Reactions: Asymmetric Synthesis of Cyclopenta[c]chromenones. [electronic resource] - Angewandte Chemie (International ed. in English) Dec 2018 - 17100-17103 p. digital Publication Type: Journal Article ISSN: 1521-3773 Standard No.: 10.1002/anie.201810402 doi