Vargas EL, Franco M, Alonso I, Tortosa M, Belén Cid M. Diboron reagents in the deoxygenation of nitrones.
Org Biomol Chem 2023;
21:807-816. [PMID:
36599009 DOI:
10.1039/d2ob01880b]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
B2nep2 efficiently promotes the N-O cleavage of nitrones to form imines in very high yields via a simple, efficient, sustainable, functional group tolerant and scalable protocol. The reaction occurs in the absence of additives through a concerted mechanism. We demonstrated that DMPO and TEMPO, typically used as radical traps, are also deoxygenated by diboron reagents, which demonstrates their limitation as mechanistic probes.
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