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.
Synthesis of Functionalized 1<i>H</i>-Indenes via Copper-Catalyzed Arylative Cyclization of Arylalkynes with Aromatic Sulfonyl Chlorides
作者:Xiaoming Zeng、Laurean Ilies、Eiichi Nakamura
DOI:10.1021/ja209300c
日期:2011.11.9
with commercially available aromatic sulfonyl chlorides that function as an aryl group donor. The reaction tolerates a broad range of functional groups, including bromide and iodide, nitrile, ketone, and nitro groups. The reaction allowed the synthesis of polycyclic aromatic hydrocarbons, such as a bis(indene), indacene, and fused polyarene derivatives, some of them showing strong fluorescence in solution
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.