Wood Protection Properties of Quaternary Ammonium Arylspiroborate Esters Derived from Naphthalene 2,3-Diol, 2,2 '-Biphenol and 3-Hydroxy-2-naphthoic Acid

作者：Carr Jenny M; Duggan Peter J^*; Humphrey David G; Platts James A; Tyndall Edward M

来源：Australian Journal of Chemistry, 2010, 63(10): 1423-1429.

DOI：10.1071/CH10132

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.

• 出版日期2010
• 单位CSIRO