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Issue 76, 2015
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Synthesis of a diboryl-N-heterocycle and its conversion to a bidentate cationic Lewis acid

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Abstract

Sequential reaction of 2-lithio-1-methylimidazole with 9-borabicyclo[3.3.1]nonane (9-BBN) dimer and 9-Cl-9-BBN yields diboryl-N-heterocycle C4H5N2(H)(BC8H14)2 (1). Reaction of 1 with I2 results in the net substitution of chelated hydride for a singly boron-bound iodide to produce C4H5N2(I)(BC8H14)2 (2). Conversely, reaction of 1 with [Ph3C][B(C6F5)4] results in the formation of the bidentate cationic Lewis acid [(C4H5N2)(BC8H14)2][B(C6F5)4] (3). Compound 3 catalyzes the hydrogenation of N-benzylidene-tert-butylamine at room-temperature.

Graphical abstract: Synthesis of a diboryl-N-heterocycle and its conversion to a bidentate cationic Lewis acid

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Publication details

The article was received on 26 Jul 2015, accepted on 11 Aug 2015 and first published on 11 Aug 2015


Article type: Communication
DOI: 10.1039/C5CC06248A
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Chem. Commun., 2015,51, 14322-14325

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    Synthesis of a diboryl-N-heterocycle and its conversion to a bidentate cationic Lewis acid

    J. M. Farrell and D. W. Stephan, Chem. Commun., 2015, 51, 14322
    DOI: 10.1039/C5CC06248A

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