Raja S, Nakajima M, Rueping M. Experimental and computational study of the catalytic asymmetric 4π-electrocyclization of N-heterocycles.
Angew Chem Int Ed Engl 2014;
54:2762-5. [PMID:
25533025 DOI:
10.1002/anie.201408020]
[Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 11/05/2014] [Indexed: 11/12/2022]
Abstract
The first asymmetric metal-catalyzed Nazarov cyclization of N-heterocycles has been developed. The use of a chiral catalyst allows the enantioselective electrocyclization of N-heterocycles under mild conditions and the corresponding products are obtained in good yields with excellent enantio- and diastereoselectivity. The reaction mechanism and the absolute configuration of the obtained products are explained by means of computational studies.
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