Silica supported palladium phosphine as a robust and recyclable catalyst for semi-hydrogenation of alkynes using syngas
作者:Samadhan A. Jagtap、Takehiko Sasaki、Bhalchandra M. Bhanage
DOI:10.1016/j.molcata.2016.01.004
日期:2016.4
This work reports a chemo-selective semi-hydrogenation of alkynes to alkenes using silica supported palladium phosphine catalyst with syngas (CO/H-2). This developed methodology is an alternative to classical Lindlar catalyst for chemo-selective semi-hydrogenation of alkynes to alkenes. Various alkynes were smoothly convert to alkenes in 60-97% conversion with 85-98% selectivity. The prepared catalyst was well characterized by Field Emmission Gun Scanning Electron Microscopy (FEG-SEM), Energy Dispersive X-ray Spectroscopy (EDS), X-ray Photoelectron Spectroscopy (XPS), Inductively Coupled Plasma- Atomic Emmission Spectroscopy (ICP-AES) analysis techniques. In addition, catalyst was effectively recycled up to four consecutive run without significant loss in its catalytic activity and selectivity. (C) 2016 Elsevier B.V. All rights reserved.
HARVEY, R. G.;KONIECZNY, M.;PATAKI, J., J. ORG. CHEM., 1983, 48, N 17, 2930-2932
作者:HARVEY, R. G.、KONIECZNY, M.、PATAKI, J.
DOI:——
日期:——
Synthesis of the isomeric mono- and bisoxiranylpyrenes