Highly Chemo- and Stereoselective Palladium-Catalyzed Transfer Semihydrogenation of Internal Alkynes Affording <i>cis</i>-Alkenes
作者:Jie Li、Ruimao Hua、Tao Liu
DOI:10.1021/jo100247a
日期:2010.5.7
DMF (N,N-dimethylformamide)/KOH was found to be an efficient hydrogen source in the Pd(OAc)2-catalyzed transfer semihydrogenation of various functionalized internal alkynes to afford cis-alkenes in good to high yields with excellent chemo- and stereoselectivity. This catalytic process was also applied to the synthesis of analogues of combretastatin A-4.
focussed library of trans-stilbene compounds through Wittig and other base catalysed condensationreactions is presented. The synthesized stilbenes were screened for their inhibitory potential against murine tyrosinase activity to explore the structure activity relationship (SAR). Presence of electron withdrawing group (-CN) at the double bond and hydroxyl group or halogen atom especially at para-position
Wittig Reaction in Deep Eutectic Solvents: Expanding the DES Toolbox in Synthesis
作者:Federica De Nardi、Giulia Gorreta、Carolina Meazzo、Stefano Parisotto、Marco Blangetti、Cristina Prandi
DOI:10.1002/chem.202402090
日期:2024.9.5
Wittigreaction was performed in Deep Eutectic Solvents with high yields, wide scope, facile TPPO (triphenyl phosphine oxide) removal and scalability of the process.