o-Benzenedisulfonimide has been used for the first time as a Brønsted acid catalyst to induce electrocyclization of dienones into cyclopentenones (Nazarov reaction). The catalyst has been used in various organic solvents or under solvent-free conditions, and it is entirely recoverable from the reaction mixture. The versatility and the effectiveness of the proposed procedure is demonstrated on a wide range of both activated and inactivated substrates.
o-Benzenedisulfonimide as a Powerful and Recyclable Organocatalyst for the Nazarov Reaction
BARBERO, Margherita;CADAMURO, Silvano;DEAGOSTINO, Annamaria;DUGHERA, Stefano;LARINI, Paolo;PRANDI, Cristina;TABASSO, Silvia;VENTURELLO, Paolo
2009-01-01
Abstract
o-Benzenedisulfonimide has been used for the first time as a Brønsted acid catalyst to induce electrocyclization of dienones into cyclopentenones (Nazarov reaction). The catalyst has been used in various organic solvents or under solvent-free conditions, and it is entirely recoverable from the reaction mixture. The versatility and the effectiveness of the proposed procedure is demonstrated on a wide range of both activated and inactivated substrates.
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