New inorganic-organic hybrid materials based on SBA-15 molecular sieves involved in the quinolines synthesis

0437105 - ÚFCH JH 2015 RIV NL eng J - Journal Article
López-Sanz, J. - Pérez-Mayoral, E. - Soriano, E. - Sturm, M. - Martín-Aranda, R. M. - López-Peinado, A. J. - Čejka, Jiří
New inorganic-organic hybrid materials based on SBA-15 molecular sieves involved in the quinolines synthesis.
Catalysis Today. Roč. 187, č. 1 (2012), s. 97-103. ISSN 0920-5861. E-ISSN 1873-4308
R&D Projects: GA AV ČR KAN100400701
Institutional support: RVO:61388955
Keywords : mesoporous molecular sieves * heterogeneous catalysis * quinolines
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 2.980, year: 2012

In this paper we report on the first mesoporous catalyst based on SBA-15 incorporating simultaneously basic and acid functions able to promote the Friedlander reaction between 2-aminoaryl ketones and ethyl acetoacetate leading to quinolines 1 with high yields. From 2-aminobenzophenone (3a) it is possible to prepare quinoline la with the highest selectivity (86%) as compared with other mesoporous acidic catalysts. In contrast, the reaction catalyzed by amine-grafted SBA-15 yielded selectively (98%) the corresponding quinolone 2a in accordance with our previous results. Experimental results have been justified by theoretical calculations as function of the stability of reaction intermediate species, which could be involved in the process. (C) 2011 Elsevier B.V. All rights reserved.
Permanent Link: http://hdl.handle.net/11104/0240670