Issue 24, 2019

A highly efficient Hg(OTf)2-mediated Sakurai–Hosomi allylation of N-tert-butyloxycarbonylamino sulfones, aldehydes, fluoroalkyl ketones and α,β-unsaturated enones using allyltrimethylsilane

Abstract

It is reported that cheap and easily available Hg(OTf)2 can efficiently mediate the Sakurai–Hosomi reaction of N-tert-butyloxycarbonyl (Boc) amino sulfones, aldehydes, and α-fluoroalkyl ketones using allyltrimethylsilane, with the catalyst loading down to 0.5–5.0 mol%, enabling the facile access to synthetically valuable homoallylic alcohols or amines, respectively. A chemoselective 1,4-allylation of α,β-unsaturated enones is also achieved under the catalysis of 5.0 mol% Hg(OTf)2. In most cases, Hg(OTf)2 exhibited intriguing properties superior to those of commonly used metal Lewis acids for such reactions, suggesting that mercury catalysis is worthwhile to explore.

Graphical abstract: A highly efficient Hg(OTf)2-mediated Sakurai–Hosomi allylation of N-tert-butyloxycarbonylamino sulfones, aldehydes, fluoroalkyl ketones and α,β-unsaturated enones using allyltrimethylsilane

Supplementary files

Article information

Article type
Research Article
Submitted
26 Aug 2019
Accepted
25 Oct 2019
First published
25 Oct 2019

Org. Chem. Front., 2019,6, 3989-3995

A highly efficient Hg(OTf)2-mediated Sakurai–Hosomi allylation of N-tert-butyloxycarbonylamino sulfones, aldehydes, fluoroalkyl ketones and α,β-unsaturated enones using allyltrimethylsilane

Y. Gong, Z. Cao, Y. Shi, F. Zhou, Y. Zhou and J. Zhou, Org. Chem. Front., 2019, 6, 3989 DOI: 10.1039/C9QO01049A

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