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Issue 81, 2014
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Generation of aminoborane monomers RR′N[double bond, length as m-dash]BH2 from amine–boronium cations [RR′NH–BH2L]+: metal catalyst-free formation of polyaminoboranes at ambient temperature

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Abstract

Protonation of MeRNH·BH3 (R = Me or H) with HX (X = B(C6F5)4, OTf, or Cl), followed by immediate, spontaneous H2 elimination, yielded the amine–boronium cation salt [MeRNH·BH2(OEt2)][B(C6F5)4] and related polar covalent analogs, MeRNH·BH2X (X = OTf or Cl). These species can be deprotonated to conveniently generate reactive aminoborane monomers MeRN[double bond, length as m-dash]BH2 which oligomerize or polymerize; in the case of MeNH2·BH3, the two step process gave poly(N-methylaminoborane), [MeNH–BH2]n.

Graphical abstract: Generation of aminoborane monomers RR′N [[double bond, length as m-dash]] BH2 from amine–boronium cations [RR′NH–BH2L]+: metal catalyst-free formation of polyaminoboranes at ambient temperature

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Publication details

The article was received on 04 Jul 2014, accepted on 15 Aug 2014 and first published on 01 Sep 2014


Article type: Communication
DOI: 10.1039/C4CC05145A
Citation: Chem. Commun., 2014,50, 12146-12149
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    Generation of aminoborane monomers RR′N[double bond, length as m-dash]BH2 from amine–boronium cations [RR′NH–BH2L]+: metal catalyst-free formation of polyaminoboranes at ambient temperature

    O. J. Metters, A. M. Chapman, A. P. M. Robertson, C. H. Woodall, P. J. Gates, D. F. Wass and I. Manners, Chem. Commun., 2014, 50, 12146
    DOI: 10.1039/C4CC05145A

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