期刊
TETRAHEDRON
卷 67, 期 5, 页码 976-981出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2010.11.112
关键词
Metallo-organocatalysis; Heterogeneous catalysis; One-pot synthesis; 4-Quinolones; Indoxyls; Mesoporous supports
资金
- National Agency of Research [ANR-07-BLAN-0167-01/02]
- Agence Nationale de la Recherche (ANR) [ANR-07-BLAN-0167] Funding Source: Agence Nationale de la Recherche (ANR)
One-pot tandem heterogeneously catalyzed procedures for the selective synthesis of 2-benzylidene-indoxyl and 2-phenyl-4-quinolone have been developed. For this purpose, heterogeneous palladium-, amine-, and phosphine-catalysts were prepared by post-synthetic grafting onto SBA silica. The state of the hybrid materials was characterized using a wide variety of molecular and solid-state techniques. These materials exhibit high activities as 2-benzylidene-indoxyl was obtained in 81% yields through {[Pd]@SBA-15+PPh3} catalysis while 2-phenyl-4-quinolone was prepared by a fully heterogeneous if {[Pd]@SBA-15+[AMINE]@SBA-3} protocol in 61-75% isolated yield. For the later, we demonstrated that the catalysts mixture could be reused up to three runs without strong deactivation. (C) 2010 Elsevier Ltd. All rights reserved.
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