Convenient and efficient deuteration of functionalized aromatics with deuterium oxide: catalysis by cycloocta-1,5-dienyliridium(I) 1,3-dionates
作者:B. McAuley、M. J. Hickey、L. P. Kingston、J. R. Jones、W. J. S. Lockley、A. N. Mather、E. Spink、S. P. Thompson、D. J. Wilkinson
DOI:10.1002/jlcr.780
日期:2003.11
Aromatic compounds bearing an ortho-directing substituent may be deuterated by exchange with deuterium oxide in the presence of a range of cycloocta-1,5-dienyliridium(I)1,3-dionate catalysts. The exchange takes place in several dipolar aprotic solvents and is directly applicable to the deuteration of polar compounds. Isotope incorporation is efficient and regiospecific. The method is applicable to a wide range of ortho-directing groups some of which are only weak directors for alternative ortho-labelling approaches. In addition, the application of microwaves enables labelling within minutes even with sub-stituents which are poor directors. Copyright © 2003 John Wiley & Sons, Ltd.
具有邻位导向取代基的芳香化合物可在多种环辛二烯基铱(I)1,3-二酮催化剂的存在下,通过与重水交换实现氘代。该交换过程可在多种偶极非质子溶剂中进行,并可直接应用于极性化合物的氘代。同位素掺入效率高且区域选择性强。该方法适用于多种邻位导向基团,其中一些基团对于其他邻位标记方法仅具有较弱的导向作用。此外,微波的应用使得即使对于导向作用较弱的取代基,也能在几分钟内完成标记。版权所有 © 2003 John Wiley & Sons, Ltd.