Hydroxyapatite-Supported Palladium-Catalyzed Efficient Synthesis of (E)-2-Alkene-4-ynecarboxylic Esters. Intense Fluorescene Emission of Selected Compounds
摘要:
A simple procedure for the synthesis of substituted (E)-2-alkene-4-ynecarboxylic esters has been achieved using hydroxyapatite-supported palladium as efficient catalyst surface. The catalyst is recycled, and the turnover number (TON) based on Pd is 16000. A naphthyl-substituted derivative gives very intense fluorescence emission.
A New Route to the Synthesis of (<i>E</i>)- and (<i>Z</i>)-2-Alkene-4-ynoates and Nitriles from <i>vic</i>-Diiodo-(<i>E</i>)-alkenes Catalyzed by Pd(0) Nanoparticles in Water
作者:Brindaban C. Ranu、Kalicharan Chattopadhyay
DOI:10.1021/ol0708121
日期:2007.6.1
and (Z)-2-alkene-4-ynoates and -nitriles by a simple reaction of vic-diiodo-(E)-alkenes with acrylicesters and nitriles catalyzed by in situ prepared Pd(0) nanoparticles in water has been developed. Addition of acrylicesters leads to (E)-isomers exclusively, whereas (Z)-isomers are obtained in high stereoselectivity from reactions of acrylonitrile. The aqueous slurry of Pd nanoparticles is recycled
Hydroxyapatite-Supported Palladium-Catalyzed Efficient Synthesis of (<i>E</i>)-2-Alkene-4-ynecarboxylic Esters. Intense Fluorescene Emission of Selected Compounds
作者:Brindaban C. Ranu、Laksmikanta Adak、Kalicharan Chattopadhyay
DOI:10.1021/jo800209z
日期:2008.7.1
A simple procedure for the synthesis of substituted (E)-2-alkene-4-ynecarboxylic esters has been achieved using hydroxyapatite-supported palladium as efficient catalyst surface. The catalyst is recycled, and the turnover number (TON) based on Pd is 16000. A naphthyl-substituted derivative gives very intense fluorescence emission.