Regio- and Chemoselective Mono- and Bisnitration of 8-Amino quinoline Amides with Fe(NO<sub>3</sub>)<sub>3</sub>·9H<sub>2</sub>O as Promoter and Nitro Source
作者:Yan He、Ningning Zhao、Liqi Qiu、Xinying Zhang、Xuesen Fan
DOI:10.1021/acs.orglett.6b02998
日期:2016.12.2
An efficient and regioselective remote C(5)–H nitration of 8-aminoquinoline amides by using the economical and nontoxic Fe(NO3)3·9H2O as promoter and nitro source has been developed. Furthermore, when CuCl2·2H2O was used as a catalyst, 8-aminoquinoline amides dominantly underwent bisnitration to give 5,7-dinitro-8-aminoquinoline amides. Notably, this is the first example in which Fe(NO3)3·9H2O plays
通过使用经济,无毒的Fe(NO 3)3 ·9H 2 O作为促进剂和硝基源,开发了一种高效且区域选择性的8-氨基喹啉酰胺远程C(5)–H硝化方法。此外,当使用CuCl 2 ·2H 2 O作为催化剂时,主要将8-氨基喹啉酰胺进行双硝化以得到5,7-二硝基-8-氨基喹啉酰胺。值得注意的是,这是第一个例子,其中Fe(NO 3)3 ·9H 2 O既起螯合促进剂又起硝化剂的双重作用,而CuCl 2 ·2H 2 O则起喹啉双硝化的有效催化剂的作用。