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Highly chemoselective synthesis of hindered amides via cobalt-catalyzed intermolecular oxidative hydroamidation.

ABSTRACT: α-Tertiary amides are of great importance for medicinal chemistry. However, they are often challenging to access through conventional methods due to reactivity and chemoselectivity issues. Here, we report a single-step approach towards such amides via cobalt-catalyzed intermolecular oxidative hydroamidation of unactivated alkenes, using nitriles of either solvent- or reagent-quantities. This protocol is selective for terminal alkenes over groups that rapidly react under known carbocation amidation conditions such as tertiary alcohols, electron-rich alkenes, ketals, weak C-H bonds, and carboxylic acids. Straightforward access to a diverse array of hindered amides is demonstrated, including a rapid synthesis of an aminoadamantane-derived pharmaceutical intermediate.

SUBMITTER: Yin YN

PROVIDER: S-EPMC8100129 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature

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Highly chemoselective synthesis of hindered amides via cobalt-catalyzed intermolecular oxidative hydroamidation.

Yin Yun-Nian YN Ding Rui-Qi RQ Ouyang Dong-Chen DC Zhang Qing Q Zhu Rong R

Nature communications 20210505 1

α-Tertiary amides are of great importance for medicinal chemistry. However, they are often challenging to access through conventional methods due to reactivity and chemoselectivity issues. Here, we report a single-step approach towards such amides via cobalt-catalyzed intermolecular oxidative hydroamidation of unactivated alkenes, using nitriles of either solvent- or reagent-quantities. This protocol is selective for terminal alkenes over groups that rapidly react under known carbocation amidati ...[more]

PMID: 33953181

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