One-Pot Thioetherification of Aryl Halides Using Thiourea and Alkyl Bromides Catalyzed by Copper(I) Iodide Free from Foul-Smelling Thiols in Wet Polyethylene Glycol (PEG 200)
作者:Habib Firouzabadi、Nasser Iranpoor、Mohammad Gholinejad
DOI:10.1002/adsc.200900671
日期:2010.1.4
tert‐butyl bromides with aryl iodides, bromides and an activated chloride using thiourea catalyzed by copper(I) iodide in wet polyethylene glycol (PEG 200) as an eco‐friendly medium in the presence of potassium carbonate at 80 and 100 °C under an inert atmosphere. The process is free from foul‐smelling thiols which makes this method more practical for the thioetherification of aryl halides. Another important
在本文中,我们开发了一种新的协议,用于使用结构复杂的烷基溴化物(例如苄基,肉桂基,正辛基,环己基,环戊基和叔丁基溴化物)与芳基碘化物,溴化物和活化的氯化物进行硫代烷基化,并使用硫脲催化湿聚乙二醇(PEG 200)中的碘化亚铜作为一种环境友好的介质,在惰性气氛下,在80和100°C的碳酸钾存在下。该方法不含难闻的硫醇,这使该方法更适合芳基卤化物的硫醚化。该方法的另一个重要的特征是多种可商购的烷基溴化物的原位 相对于现有方案(其中较难获得的硫醇直接用于制备芳基硫醚)的现有方案,产生硫醇根离子。