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Issue 39, 2013
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Ring expansion of alkynyl cyclopropanes to highly substituted cyclobutenes via a N-sulfonyl-1,2,3-triazole intermediate

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Abstract

Regioselective ring expansion of alkynyl cyclopropanes to highly substituted cyclobutenes was developed. The reaction involves a copper-catalyzed cycloaddition of an alkyne with an arylsulfonyl azide and a silver-catalyzed carbene formation followed by ring expansion of a cyclopropyl carbene intermediate.

Graphical abstract: Ring expansion of alkynyl cyclopropanes to highly substituted cyclobutenes via a N-sulfonyl-1,2,3-triazole intermediate

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Publication details

The article was received on 27 Jun 2012, accepted on 23 Jul 2012 and first published on 24 Jul 2012


Article type: Communication
DOI: 10.1039/C2CC34609E
Chem. Commun., 2013,49, 4376-4378

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    Ring expansion of alkynyl cyclopropanes to highly substituted cyclobutenes via a N-sulfonyl-1,2,3-triazole intermediate

    R. Liu, M. Zhang, G. Winston-McPherson and W. Tang, Chem. Commun., 2013, 49, 4376
    DOI: 10.1039/C2CC34609E

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