Nickel-Catalyzed Esterification of Aliphatic Amides.

Nickel-Catalyzed Esterification of Aliphatic Amides.
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DOI:
10.1002/anie.201607856
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发表时间:
2016-11-21
影响因子:
16.6
通讯作者:
Garg, Neil K.
Garg, Neil K.
中科院分区:
化学1区
文献类型:
--
作者:
Hie, Liana;Baker, Emma L.;Anthony, Sarah M.;Desrosiers, Jean-Nicolas;Senanayake, Chris;Garg, Neil K.

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Recent studies have demonstrated that amides can be used in nickel-catalyzed reactions that lead to cleavage of the amide C–N bond, with formation of a C–C or C–heteroatom bond. However, the general scope of these methodologies has been restricted to amides where the carbonyl is directly attached to an arene or heteroarene. We now report the nickel-catalyzed esterification of amides derived from aliphatic carboxylic acids. The transformation requires only a slight excess of the alcohol nucleophile and is tolerant of heterocycles, substrates with epimerizable stereocenters, and sterically congested coupling partners. Moreover, a series of amide competition experiments establish selectivity principles that will aid future synthetic design. These studies overcome a critical limitation of current Ni-catalyzed amide couplings and are expected to further stimulate the use of amides as synthetic building blocks in C–N bond cleavage processes. Recent studies on nickel-catalyzed activation of amides have been shown to forge C–C or –heteroatom bonds through cleavage on the amide C–N bond. We report the first nickel-catalyzed activation of amides derived from aliphatic carboxylic acids, thus overcoming the key limitation associated with nickel-catalyzed couplings of amides.
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