87574-15-0Relevant articles and documents
Exploration of Catalytic Activity of Quercetin Mediated Hydrothermally Synthesized NiO Nanoparticles Towards C–N Coupling of Nitrogen Heterocycles
Krishnaveni,Lakshmi,Kadirvelu,Kaveri
, p. 1628 - 1640 (2019/12/24)
Abstract: A new approach towards the preparation of phase pure NiO nanoparticles via quercetin mediated hydrothermal method is proposed in this work. The performance of quercetin as capping agent is found to be good. The XRD and SEM results confirm that the NiO nanoparticles prepared with quercetin are smaller in size and have refined morphology than that prepared without quercetin. Thermal stability, elemental composition and particle size of prepared nanoparticles have been revealed by TG-DSC, EDAX and HR-TEM analysis respectively. N2 adsorption–desorption isotherm (BET) analysis was done to reveal specific surface area. The prepared NiO nanoparticles act as cost effective, environmental friendly and efficient catalyst for the C–N cross coupling of indole and electron deficient pyrrole, under very mild reaction conditions. The catalytic system is able to tolerate many functional groups with different electronic and structural properties. Hence the present catalytic system may be possibly applied in large scale synthesis. Graphic Abstract: [Figure not available: see fulltext.].
A multi-substituted 10 - hydroxyl philippines and its derivative and its synthesis method
-
Paragraph 0153; 0156, (2019/01/08)
The invention provides a multi-substituted 10 - hydroxyl philippines and its derivative and its synthesis method, the method comprises: formula (1) compounds in the [...], additive, peroxide and organic solvent under the action of the [...] (2) compound,
Practical copper-catalyzed N-arylation of nitrogen heterocycles with aryl halides under ligand and additive free conditions
Chang, Joyce Wei Wei,Xu, Xiuhui,Chan, Philip Wai Hong
, p. 245 - 248 (2007/10/03)
N-arylation of a wide variety of nitrogen heterocycles with aryl iodides catalyzed by copper iodide under mild ligand and additive free conditions (nBu4NBr, PhMe, NaOH, reflux, 22 h) was accomplished in good to excellent yields (up to 95%) and substrate conversions (up to 99%).