Improved method for the conversion of pinacolboronic esters into trifluoroborate salts: facile synthesis of chiral secondary and tertiary trifluoroborates
作者:Viktor Bagutski、Abel Ros、Varinder K. Aggarwal
DOI:10.1016/j.tet.2009.10.002
日期:2009.11
A general method for the preparation of virtually any potassium trifluoroborate salt from the corresponding pinacolboronic ester is reported. Thus, conditions for an azeotropic removal of pinacol from the reaction mixture were found to afford the desired potassium trifluoroborates of sufficient purity (>95%) in nearly quantitative yields irrespective of the nature of the product. The utility of this
报道了从相应的频哪醇硼酸酯制备几乎任何三氟硼酸钾盐的通用方法。因此,发现从反应混合物中共沸除去频哪醇的条件以几乎定量的产率提供了具有足够纯度(> 95%)的所需三氟硼酸钾,而与产物的性质无关。通过制备大量对映体富集的仲和叔三氟硼酸钾说明了该方法的实用性。