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Issue 14, 2016
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Lewis acid–base 1,2-addition reactions: synthesis of pyrylium borates from en-ynoate precursors

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Abstract

Treatment of methyl (Z)-2-alken-4-ynoates with the strong Lewis acid tris(pentafluorophenyl) borane, B(C6F5)3, yield substituted zwitterionic pyrylium borate species via an intramolecular 6-endo-dig cyclisation reaction.

Graphical abstract: Lewis acid–base 1,2-addition reactions: synthesis of pyrylium borates from en-ynoate precursors

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Publication details

The article was received on 28 Aug 2015, accepted on 22 Sep 2015 and first published on 25 Sep 2015


Article type: Communication
DOI: 10.1039/C5DT03340C
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Citation: Dalton Trans., 2016,45, 5929-5932
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    Lewis acid–base 1,2-addition reactions: synthesis of pyrylium borates from en-ynoate precursors

    L. C. Wilkins, H. B. Hamilton, B. M. Kariuki, A. S. K. Hashmi, M. M. Hansmann and R. L. Melen, Dalton Trans., 2016, 45, 5929
    DOI: 10.1039/C5DT03340C

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