TiO2 nanoparticles as an effective catalyst for the synthesis of hexahydro-2-quinolinecarboxylic acids derivatives
作者:Shahrzad Abdolmohammadi
DOI:10.1016/j.cclet.2012.06.038
日期:2012.9
The one-pot three-component reaction of arylmethylidenepyruvic acids, 1,3-cyclohexandiones and ammonium acetate provides an economical and efficient synthetic route to 5-oxo-4-aryl-1,4,5,6,7,8-hexahydro-2-quinolinecarboxylic acid 4 under solvent-free conditions using a catalytic amount of TiO2 nanoparticles (TiO2 NPs) as an effective heterogeneous catalyst. (C) 2012 Shahrzad Abdolmohammad. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
TiO<sub>2</sub>
-SiO<sub>2</sub>
nanocomposite-promoted efficient cyclocondensation reaction of arylmethylidenepyruvic acids with dimedone in aqueous media
作者:Sepehr Sadegh-Samiei、Shahrzad Abdolmohammadi
DOI:10.1002/jccs.201800057
日期:2018.10
8‐hexahydro‐2‐quinolinecarboxylic acids through a condensation reaction of arylmethylidenepyruvic acids with ammonium acetate and dimedone using a catalytic amount of TiO2–SiO2 nanocomposite (15 mol%) at room temperature in aqueous media. The principal advantage of this procedure is the relatively high yields (94–98%) with short reaction times (2 hr), under mild reaction conditions and with low environmental impact