Practical regioselective halogenation of vinylogous esters: synthesis of differentiated mono-haloresorcinols and polyhalogenated resorcinols
作者:Xiaohong Chen、Xiaoguang Liu、Jenny S. Martinez、Justin T. Mohr
DOI:10.1016/j.tet.2016.02.006
日期:2016.6
A practical and efficient method for the direct, regioselective conversion of vinylogous esters to haloresorcinols is reported. Control of the reaction conditions enables synthesis of either the 4- or 6-haloresorcinol isomers from a common precursor with excellent regiocontrol and high yield. The generality and functional group tolerance of this novel protocol is demonstrated. The utility of this methodology
报道了一种实用有效的方法,用于将乙烯基酯直接,区域选择性地转化为卤代间苯二酚。控制反应条件使得能够从普通前体中以优异的区域控制和高产率合成4-或6-卤代间苯二酚异构体。证明了这种新颖的协议的普遍性和官能团耐受性。还报道了该方法用于获得多卤代间苯二酚的实用性。这些方法为进一步的合成应用创建了有用的功能化构建基块。