Green synthesis of predominant (111) facet CuO nanoparticles: Heterogeneous and recyclable catalyst for N-arylation of indoles
作者:Nikhil V. Suramwar、Sanjay R. Thakare、Nandkishor N. Karade、Niren T. Khaty
DOI:10.1016/j.molcata.2012.03.017
日期:2012.7
Well faceted CuO nanoparticles were synthesized by thermal-assisted green strategy at reflux temperature in a short period of time. A possible growth mechanism of such highly faceted nanostructures based on typical biomolecule-crystal interactions in aqueous solution is tentatively proposed. The large surface area (223.36 m(2)/g) and rich exposed active sites are expected to endow such nanostructures with excellent performances in catalysis as demonstrated here for remarkable catalytic activity with respect to the N-arylation of indoles. Nanoparticles were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Both the activity and selectivity of the N-arylation reactions could be tuned by varying the concentration of CuO nanoparticles. Nanoparticles catalyst were recycled and reused for further catalytic reactions with minimal loss in activity. A variety of indole derivatives afforded corresponding N-arylation product with excellent yields (up to 98%). (C) 2012 Elsevier B.V. All rights reserved.
SUBSTITUTED 1-(4-AMINOPHENYL)INDOLES AND THEIR USE AS ANTI-INFLAMMATORY AGENTS
申请人:Boehringer Ingelheim Pharmaceuticals, Inc.
公开号:EP1303508A1
公开(公告)日:2003-04-23
US6353007B1
申请人:——
公开号:US6353007B1
公开(公告)日:2002-03-05
[EN] SUBSTITUTED 1-(4-AMINOPHENYL)INDOLES AND THEIR USE AS ANTI-INFLAMMATORY AGENTS<br/>[FR] 1-(4-AMINOPHENYL) INDOLES SUBSTITUES ET LEUR UTILISATION COMME ANTI-INFLAMMATOIRES
申请人:BOEHRINGER INGELHEIM PHARMA
公开号:WO2002006273A1
公开(公告)日:2002-01-24
1-(4-Aminophenyl) indoles optionally substituted on the 2-,4-,5-,6- and 7- positions of the indole ring and on the amino group on the 4- position of the phenyl ring, which indoles inhibit IL-2 production in T-lymphocytes.