Enantioselective three-component aminomethylation of α-diazo ketones with alcohols and 1,3,5-triazines

Jiuwei Che, Li Niu, Shikun Jia, Dong Xing () and Wenhao Hu ()
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Jiuwei Che: East China Normal University
Li Niu: East China Normal University
Shikun Jia: Sun Yat-sen University
Dong Xing: East China Normal University
Wenhao Hu: Sun Yat-sen University

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Enantioselective α-aminomethylation of carbonyl compounds constitutes a powerful protocol for introducing aminomethyl groups to simple organic molecules. However, current strategies rely on nucleophile-based enantioselective activation with inherently activated substrates only, and enantioselective protocol based on the activation of in situ-generated unstable formaldimines remains elusive, probably owing to their unstable nature and the lack of steric environment for efficient stereocontrols. Here, based on a rhodium/chiral phosphoric acid cooperative catalysis, we achieved an enantioselective three-component reaction of α-diazo ketones with alcohols and 1,3,5-triazines. A dual hydrogen bonding between the chiral phosphoric acid catalyst and two distinct active intermediates was proposed to be crucial for the efficient electrophile-based enantiocontrol. A series of chiral β-amino-α-hydroxy ketones including those derived from simple aliphatic alcohols, allylic alcohol, propargyl alcohol, complicated natural alcohols and water could all be prepared in high efficiency and enantioselectivity.

Date: 2020
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DOI: 10.1038/s41467-020-15345-2

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