A robust N-nucleophilic 1,3-N,O-dipole equivalent reacts with unsymmetrical internal alkynes under gold catalysis. Conjugation from a remote nitrogen lone pair enables and controls this convergent and highly regioselective process.
![Graphical abstract: Highly regioselective synthesis of 2,4,5-(hetero)aryl substituted oxazoles by intermolecular [3+2]-cycloaddition of unsymmetrical internal alkynes](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C3CC45410J&imageInfo.ImageIdentifier.Year=2013)
E. Chatzopoulou and P. W. Davies, Chem. Commun., 2013, 49, 8617 DOI: 10.1039/C3CC45410J
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