Facile one-pot three-component synthesis of diverse 2,3-disubstituted isoindolin-1-ones using ZrO<sub>2</sub> nanoparticles as a reusable dual acid–base solid support under solvent-free conditions
A facileone-potthree-component protocol for the synthesis of a series of multi-functionalized 2,3-disubstituted isoindolin-1-ones has been developed using ZrO2 nanoparticles as a dual acid–base solid support under solvent-free conditions. The surface of the ZrO2 nanoparticles, which is embedded with active hydroxyl groups, oxyanions and Zr4+ ions, efficiently catalyses the condensation of 2-carboxybenzaldehyde
Nano Fibrous Silica Sulphuric Acid as an Efficient Catalyst for the Synthesis of β-Enaminone
作者:Zeba N. Siddiqui、Kulsum Khan、Nayeem Ahmed
DOI:10.1007/s10562-013-1190-4
日期:2014.4
Synthesis of KCC-1 silica sulphuric acid as a new catalyst has been reported. The catalyst was characterized using XRD, SEM, TEM, BET, FT-IR, TGA-DTA, and EDX analysis. The catalytic activity was evaluated for the synthesis of enaminonesundersolvent-freeconditions. The catalyst was easily recovered and reused up to seven cycles with slight loss of activity. The attractive features of this protocol
Synthesis, characterization and pharmacological screening of some novel 5-imidazopyrazole incorporated polyhydroquinoline derivatives
作者:Piyush N. Kalaria、Shailesh P. Satasia、Dipak K. Raval
DOI:10.1016/j.ejmech.2014.02.015
日期:2014.5
of pathogenic strains of bacteria and fungi and also for their antitubercular activity against Mycobacterium tuberculosis H37Rv strain. Two of them (8n, 8t) exhibited excellent antimalarial activity. Some of them exhibited excellent antibacterial activity and moderate antituberculosis activity compared with the first line drugs.
Magnetically separable Fe<sub>3</sub>O<sub>4</sub>–SO<sub>3</sub>H nanoparticles as an efficient solid acid support for the facile synthesis of two types of spiroindole fused dihydropyridine derivatives under solvent free conditions
(N–H or N–R/Ar) two different types of products are formed through three component one-pot condensation reactions. Operational simplicity, reduced reaction time, lower reaction temperature, elimination of solvents, high yields of the products, easy separation of Fe3O4–SO3H nanoparticles by means of an external magnetic bar and recyclability of Fe3O4–SO3H nanoparticles make the present method economical
发现磁性可分离的Fe 3 O 4 -SO 3 H纳米颗粒可作为一种有效的固体负载酸催化剂,用于轻松合成两种类型的螺吲哚稠合的二氢吡啶衍生物,例如螺[indolo-3,10'-茚并[1,2] -b ]喹啉] -2,4,11'-三酮和茚并喹啉-螺氧并吲哚在无溶剂条件下。根据起始异构素(NH或N-R / Ar)的N取代的性质,可以通过三组分一锅缩合反应形成两种不同类型的产物。操作简单,减少反应时间,降低反应温度,消除溶剂,产物产率高,Fe 3 O 4 -SO 3易于分离H纳米颗粒通过外部磁棒和Fe 3 O 4 -SO 3 H纳米颗粒的可回收性使本方法经济,绿色和可持续。
Synthesis and structure of 1,4-diaryl-7,7-dimethyl-1,2,3,4,5,6,7,8-octahydroquinoline-2,5-diones