Regioselective Oxidative C-H Phosphonation of Imidazo[1,2-<i>a</i>]pyridines and Related Heteroarenes Mediated by Manganese(III) Acetate
作者:Mahipal Yadav、Saidulu Dara、Varma Saikam、Mukesh Kumar、Sravan Kumar Aithagani、Satya Paul、Ram A. Vishwakarma、Parvinder Pal Singh
DOI:10.1002/ejoc.201500984
日期:2015.9
Herein, we report a MnIII-mediated regioselective method for the direct C–H phosphonation of imidazo[1,2-a]pyridines by using dialkyl phosphites. 3-Phosphonated imidazo[1,2-a]pyridines are synthesized in good to excellent yields under the optimized reaction conditions. The present method is also applicable to the functionalization of related heteroarenes, and unlike previously reported methods, the
在此,我们报告了一种 MnIII 介导的区域选择性方法,用于使用亚磷酸二烷基酯直接对咪唑并 [1,2-a] 吡啶进行 C-H 磷酸化。在优化的反应条件下,3-磷酸化咪唑并 [1,2-a] 吡啶的合成收率非常好。本方法也适用于相关杂芳烃的功能化,与以前报道的方法不同,本方法适用于 (NH)-杂芳烃。