One-pot multi-component synthesis of polyhydroquinolines at ambient temperature
作者:K.A. Undale、T.S. Shaikh、D.S. Gaikwad、D.M. Pore
DOI:10.1016/j.crci.2010.09.009
日期:2011.5
Résumé An efficient and eco-friendly one-pot synthesis of polyhydroquinolines at ambient temperature from the multi-component reaction of aldehyde, 1,3-diketone, β-keto ester and ammonium acetate in ethanol medium is described. The probable mechanism of transformation is suggested. The features of this procedure are mild reaction conditions, no need of external catalyst, good yields and the operational simplicity at ambient temperature.
Hydromagnesite as an Efficient Recyclable Heterogeneous Solid Base Catalyst for the Synthesis of Flavanones, Flavonols and 1,4-Dihydropyridines in Water
作者:U. Chinna Rajesh、Sunny Manohar、Diwan S. Rawat
DOI:10.1002/adsc.201300555
日期:2013.11.11
AbstractA form of hydromagnesite (HM) with flower‐like thin‐sheet morphology was synthesized by an environmentally benign approach using simple conventional heating at moderate temperature without using any template in water as medium. The versatility of this HM catalyst was studied in the synthesis of flavanones, flavonols and the multicomponent synthesis of 1,4‐dihydropyridines in water. The recyclability of catalyst was studied for six times and there was no appreciable loss in its catalytic activity.magnified image
Wu, Chunlei; Shen, Runpu; Tao, Feifei, Journal of the Indian Chemical Society, 2013, vol. 90, # 8, p. 1243 - 1246
Functionalized superparamagnetic Fe<sub>3</sub>O<sub>4</sub> as an efficient quasi-homogeneous catalyst for multi-component reactions
作者:U. Chinna Rajesh、Divya Divya、Diwan S. Rawat
DOI:10.1039/c4ra06803c
日期:——
Tetrabutylammonium valinate [NBu4][Val] ionic liquid functionalized Fe3O4 NPs (VSF) was used as an efficient “quasi-homogeneous” catalyst for multi-component synthesis of 1,4-dihydropyridines and 2-amino-4-(indol-3-yl)-4H-chromenes at room temperature.