One-Pot Procedure for the Synthesis of Unsymmetrical Diarylalkynes
摘要:
Unsymmetrical diarylalkynes are accessible by a one-pot procedure from two different aryl halides and (trimethylsilyl)acetylene. The three-component coupling is initialized by a Pd/Cu-catalyzed Sonogashira coupling of an aryl halide with (trimethylsilyl)acetylene. After subsequent desilylation Ilk; formed aryl(trimethylsilyl)acetylene with aqueous potassium hydroxide, a second Sono-gashira coupling with an aryl iodide that does not require any additional Pd/Cu-catalyst gives access to an unsymmetrical diarylalkyne.
One-Pot Procedure for the Synthesis of Unsymmetrical Diarylalkynes
作者:René Severin、Jessica Reimer、Sven Doye
DOI:10.1021/jo100460v
日期:2010.5.21
Unsymmetrical diarylalkynes are accessible by a one-pot procedure from two different aryl halides and (trimethylsilyl)acetylene. The three-component coupling is initialized by a Pd/Cu-catalyzed Sonogashira coupling of an aryl halide with (trimethylsilyl)acetylene. After subsequent desilylation Ilk; formed aryl(trimethylsilyl)acetylene with aqueous potassium hydroxide, a second Sono-gashira coupling with an aryl iodide that does not require any additional Pd/Cu-catalyst gives access to an unsymmetrical diarylalkyne.