Schwieter KE, Shen B, Shackleford JP, Leighty MW, Johnston JN. Umpolung amide synthesis using substoichiometric N-iodosuccinimide (NIS) and oxygen as a terminal oxidant.
Org Lett 2014;
16:4714-7. [PMID:
25198239 PMCID:
PMC4168777 DOI:
10.1021/ol502089v]
[Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
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Umpolung Amide Synthesis
(UmAS) provides direct access to amides
from an α-bromo nitroalkane and an amine. Based on its mechanistic
bifurcation after convergent C–N bond formation, depending
on the absence or presence of oxygen, UmAS using substoichiometric N-iodosuccinimide (NIS) under aerobic conditions
has been developed. In combination with the enantioselective preparation
of α-bromo nitroalkane donors, this protocol realizes the goal
of enantioselective α-amino amide and peptide synthesis based
solely on catalytic methods.
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