Record Details

Hantzsch synthesis of 1,4-dihydropyridine derivatives over ZnO/ZrO2 catalyst under solvent free condition

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Hantzsch synthesis of 1,4-dihydropyridine derivatives over ZnO/ZrO2 catalyst under solvent free condition
 
Creator Sunkara, Prasad
Keshavulu, M
Puppala, Veerasomaiah
Kumar, P Vijay
Basude, Manohar
 
Subject Hantzsch synthesis
Zirconia supported zinc
Tetragonal phase
Solvent free condition
1,4-Dihydropyridines
 
Description 1055-1063
Hantzsch synthesis of 1,4-dihydropyridine derivatives is accomplished using novel and efficient ZnO/ZrO2 catalyst. The catalysts prepared by facile precipitation and wet impregnation method have been characterized by using techniques like XRD, SEM, EDS, UV-diffuse reflectance spectra, FTIR, XPS, BET surface area. Ex situ Pyridine absorption FTIR spectroscopy is used to determine the Bronsted and Lewis acidic sites. Enhanced activity of the zirconia supported zinc catalyst is attributed to tetragonal phase, more acidic sites and high surface area of the catalyst. The products attained in good to excellent yields in short duration under solvent free condition, minimizing the disposal problem and energy dissipation. The catalyst can be reused umpteen times without significant loss in activity.
 
Date 2021-08-23T10:59:11Z
2021-08-23T10:59:11Z
2021-08
 
Type Article
 
Identifier 0975-0975(Online); 0376-4710(Print)
http://nopr.niscair.res.in/handle/123456789/57930
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJC-A Vol.60A(08) [August 2021]