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

被引：0

作者：

Sunkara, Prasad ^{[1
]}

Keshavulu, M. ^{[1
]}

Puppala, Veerasomaiah ^{[1
]}

Kumar, P. Vijay ^{[1
]}

Basude, Manohar ^{[1
]}

机构：

[1] Osmania Univ, Dept Chem, Hyderabad, India

来源：

INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY | 2021年 / 60卷 / 08期

关键词：

Hantzsch synthesis; Zirconia supported zinc; Tetragonal phase; Solvent free condition; 1,4-Dihydropyridines; ONE-POT SYNTHESIS; POLYHYDROQUINOLINE DERIVATIVES; HETEROGENEOUS CATALYST; GREEN SYNTHESIS; MULTICOMPONENT REACTIONS; ORGANIC SYNTHESES; AQUEOUS-MEDIA; ACID CATALYST; EFFICIENT; NANOPARTICLES;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：1055 / 1063

页数：9

共 47 条

[1] Acetalization of glycerol with acetone over various metal-modified SBA-15 catalysts [J].