Convenient stereoselective synthesis of (Z)-chalcone derivatives from 1,3-diaryl-2-propynyl silyl ethers
作者:Kazuhiro Yoshizawa、Takayuki Shioiri
DOI:10.1016/j.tetlet.2006.05.021
日期:2006.7
Various (Z)-chalcone derivatives were easily synthesized in a stereoselective manner from 1,3-diaryl-2-propynyl silyl ethers by a catalytic reaction using potassium tert-butoxide under very mild conditions after acid treatment.
Trimethylsilyl Trifluoromethanesulfonate- Accelerated Addition of Catalytically Generated Zinc Acetylides to Aldehydes
作者:C. Wade Downey、Brian D. Mahoney、Vincent R. Lipari
DOI:10.1021/jo900102w
日期:2009.4.3
In the presence of TMSOTf, a wide variety of terminal acetylenes add rapidly and efficiently to aldehydes via a catalytically generated zinc acetylide. In the absence of TMSOTf, no reaction is observed under otherwise identical conditions.