Enantioselective propargylic [1,3]-rearrangements: copper-catalyzed O-to-N migrations toward C-N bond formation.
Enantioselective propargylic [1,3]-rearrangements: copper-catalyzed O-to-N migrations toward C-N bond formation.
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DOI:
10.1039/c7sc01042g
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发表时间:
2017-06-01
期刊:
影响因子:
8.4
通讯作者:
Cordier CJ
中科院分区:
文献类型:
--
作者:
Cheng LJ;Brown APN;Cordier CJ
We have identified an enantioselective copper-catalyzed O-to-N formal [1,3]-rearrangement to form N-propargylic-2-pyridones. We have identified an enantioselective copper-catalyzed O-to-N formal [1,3]-rearrangement to form N-propargylic-2-pyridones. This enantioconvergent O-to-N propargylic rearrangement occurs rapidly at ambient temperature and high enantioselectivity is observed for a range of 3-alkyl-substituted substrates. Stereochemical features include a mild kinetic enantioenrichment of the substrate and a non-linear relationship between product and ligand enantiopurity. Based on kinetic analyses and cross-over experiments, we put forward a mechanistic proposal involving Cu-acetylides as well as bimetallic intermediates in which coordination to the pyridyl nitrogen is likely a crucial binding interaction.
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DOI:
10.1002/anie.201506882
发表时间:
2015-11-09
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Cheng LJ;Cordier CJ
通讯作者:
Cordier CJ
DOI:
10.1002/anie.201508983
发表时间:
2016-02-05
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Burés J
通讯作者:
Burés J
影响因子:
3.2
作者:
Baldwin, John E.;Leber, Phyllis A.
通讯作者:
Leber, Phyllis A.
影响因子:
15
作者:
GUILLANEUX, D;ZHAO, SH;KAGAN, HB
通讯作者:
KAGAN, HB
影响因子:
16.6
作者:
Bures, Jordi
通讯作者:
Bures, Jordi