Benzoxazaborine derivatives were synthesized by the dehydration condensation reaction of 2-aminobenzyl alcohols with arylboronic acids. The insensitivity of the benzoxazaborines to hydrolysis allowed these compounds to be isolated by silica gel column chromatography. The single crystal X-ray structural analysis demonstrated the highly planar structure of the benzoxazaborine unit, and the BN bond length indicated an extended π-conjugated system.

中文翻译：

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共轭苯并氮杂硼烷衍生物的合成与结构分析

通过2-氨基苄基醇与芳基硼酸的脱水缩合反应合成苯并恶唑啉碱衍生物。苯并恶唑啉碱对水解的不敏感性使得可以通过硅胶柱色谱法分离这些化合物。单晶X射线结构分析表明苯并恶唑博林单元的高度平面结构，并且B N键的长度表示扩展的π-共轭体系。