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Yb()-catalysed -thioallylation of ynamides

Reported herein is a syn -thioallylation of ynamides incorporating a sulfide moiety at the α-position and an allyl group at the β-position of the ynamide. The transformation is successful under ytterbium( iii )-catalysis, providing access to highly substituted thioamino-skipped-dienes with broad sub...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2021-07, Vol.57 (61), p.7521-7524
Main Authors: Gogoi, Manash Protim, Vanjari, Rajeshwer, Prabagar, B, Yang, Shengwen, Dutta, Shubham, Mallick, Rajendra K, Gandon, Vincent, Sahoo, Akhila K
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Summary:Reported herein is a syn -thioallylation of ynamides incorporating a sulfide moiety at the α-position and an allyl group at the β-position of the ynamide. The transformation is successful under ytterbium( iii )-catalysis, providing access to highly substituted thioamino-skipped-dienes with broad substrate scope. Thus, tetrasubstituted olefins (with four different functional groups: amide, phenyl, thioaryl/alkyl, and allyl on the carbon centers) are made in a single step from readily accessible ynamides, preserving complete atom economy. The reaction can be extended to the synthesis of selenoamino dienes by ynamide syn -selenoallylation. DFT studies and control experiments provide insight into the reaction mechanism. Reported herein is a syn -thioallylation of ynamides incorporating a sulfide moiety at the α-position and an allyl group at the β-position of the ynamide.
ISSN:1359-7345
1364-548X
DOI:10.1039/d1cc02611a