Functionalization of Dihalophenylboronic Acids by Deprotonation of Their<i>N</i>-Butyldiethanolamine Esters
作者:Krzysztof Durka、Paweł Kurach、Sergiusz Luliński、Janusz Serwatowski
DOI:10.1002/ejoc.200900526
日期:2009.9
Deprotonative lithiation of various 6-butyl-2-(dihalophenyl)-(N–B)-1,3,6,2-dioxazaborocanes (N-butyldiethanolamine esters of dihalophenylboronic acids) was investigated. It was found that selective transformations can be best achieved by use of LDA as the lithiating reagent. The reactivities of these compounds vary significantly, depending on the natures and positions of the halogen atoms. The resultant
研究了各种 6-丁基-2-(二卤代苯基)-(N-B)-1,3,6,2-二恶唑硼烷(二卤代苯基硼酸的 N-丁基二乙醇胺酯)的去质子锂化。发现使用LDA作为锂化试剂可以最好地实现选择性转化。这些化合物的反应性变化很大,这取决于卤原子的性质和位置。所得硼-锂双金属中间体与亲电试剂反应,得到官能化卤化芳基硼酸。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)