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Wood protection properties of quaternary ammonium arylspiroborate esters derived from naphthalene 2,3-Diol, 2,2 '-Biphenol and 3-Hydroxy-2-naphthoic acid

Carr, Jenny M., Duggan, Peter James, Humphrey, David G., Platts, James Alexis and Tyndall, Edward M. 2010. Wood protection properties of quaternary ammonium arylspiroborate esters derived from naphthalene 2,3-Diol, 2,2 '-Biphenol and 3-Hydroxy-2-naphthoic acid. Australian Journal of Chemistry 63 (10) , pp. 1423-1429. 10.1071/CH10132

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Abstract

In continuation of a program aimed at developing a boron-based, high performing and environmentally benign wood preservative suitable for outdoor use, three lipophilic tetra-n-butylammonium spiroborates, tetra-n-butylammonium bis[naphthalene-2,3-diolato(2-)-O,O′]borate 4, tetra-n-butylammonium bis[2,2′-biphenolato(2-)-O,O′]borate 5 and tetra-n-butylammonium bis[3-hydroxy-2-naphthoato(2-)-O,O′]borate 6 were prepared and tested. The higher molecular weight and lipophilicity of these borates compared with related borates previously examined correlates, in the case of 5 and 6, with significantly enhanced leach resistance while termiticidal activity has been maintained. The racemic spiroborate derived from 2,2′-biphenol 5, in particular, appears to be close to an optimum balance between ease of synthesis, solubility, hydrolytic stability and termiticidal activity.

Item Type: Article
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
ISSN: 0004-9425
Last Modified: 09 Apr 2014 21:14
URI: http://orca.cf.ac.uk/id/eprint/12552

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