Reactivity of <i>p</i>-Toluenesulfonylmethyl Isocyanide: Iron-Involved C–H Tosylmethylation of Imidazopyridines in Nontoxic Media
作者:Shuai Lu、Xinju Zhu、Ke Li、Yu-Jing Guo、Meng-Dan Wang、Xue-Mei Zhao、Xin-Qi Hao、Mao-Ping Song
DOI:10.1021/acs.joc.6b01552
日期:2016.9.16
A novel iron-involved tosylmethylation of imidazo[1,2-α]pyridines with p-toluenesulfonylmethyl isocyanide in a solvent mixture of H2O and PEG400 under an Ar atmosphere has been developed. This protocol provides a facile synthetic route for the functionalization of the imidazo[1,2-α]pyridine scaffold with broad substrate compatibility, which is less expensive and environmentally friendly. The current
在氩气气氛下,在H 2 O和PEG 400的溶剂混合物中,已开发出一种新型的铁参与的咪唑并[1,2-α]吡啶与对甲苯磺酰基甲基异氰酸酯的铁参与甲苯磺酰基甲基化反应。该方案为具有广泛底物相容性的咪唑并[1,2-α]吡啶骨架的功能化提供了一条简便的合成路线,该路线便宜且对环境友好。目前的方法可以进一步使C3位置的吲哚进行区域选择性C–H甲苯磺酰基甲基化。同样,对甲苯磺酰基甲基异氰化物首次被用作甲苯磺酰基甲基化试剂。