Chemoselective Zinc/HCl Reduction of Halogenated β-Nitrostyrenes: Synthesis of Halogenated Dopamine Analogues
作者:Justin Maresh、Arthur Ralko、Tom Speltz、James Burke、Casey Murphy、Zachary Gaskell、JoAnn Girel、Erin Terranova、Conrad Richtscheidt、Mark Krzeszowiec
DOI:10.1055/s-0034-1379481
日期:——
A detailed account regarding the synthesis of 2- and 5-halogenated dopamine is given. The key step is a chemoselective reduction of a nitrostyrene by Zn/HCl at 0 degrees C. These conditions represent a simple, low-cost alternative to reduction by water-sensitive hydride donors and two-step procedures. Under these conditions, aryl fluoride, chloride, and bromide groups are stable. However, iodine undergoes significant reductive dehalogenation.