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Facile synthesis of enol ethers via Zn(OTf)2-mediated formal alkyne hydration-Smiles rearrangement†
Xinying Chew,Yuhan Lin,Yee Hwee Lim
RSC Advances Pub Date : 03/26/2014 00:00:00 , DOI:10.1039/C4RA00159A
Abstract

An efficient protocol involving commercially available zinc trifluoromethanesulfonate was able to transform a terminal alkyne to an enol ether via a formal tandem Markovnikov hydration-Smiles type rearrangement. The chemoselective reaction was able to work with a range of heteroaromatic tethers such as diazine, pyridine, benzimidazole and benzothiazole.

Graphical abstract: Facile synthesis of enol ethers via Zn(OTf)2-mediated formal alkyne hydration-Smiles rearrangement
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