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Your search keyword '"ORGANIC solvents"' showing total 2 results
Start Over Descriptor "ORGANIC solvents" Search Limiters Peer Reviewed Topic benzaldehyde Topic organic synthesis Topic pyridine Journal tetrahedron letters: international organ for the rapid publication of preliminary communications in organic chemistry
2 results on '"ORGANIC solvents"'

1. Ytterbium-catalyzed synthesis of dihydropyridines

Author

Sueki, Shunsuke, Takei, Ryo, Abe, Junya, and Shimizu, Isao

Subjects
*ORGANIC synthesis, *YTTERBIUM, *PYRIDINE, *METAL catalysts, *ANILINE, *BENZALDEHYDE, *PROPIONATES, *ORGANIC solvents, *CHEMICAL reactions
Abstract

Abstract: The reaction of anilines, benzaldehydes, and ethyl 3,3-diethoxypropionate in the presence of Yb(OTf)3 proceeded under mild reaction conditions to give dihydropyridines (DHPs). We have found that the reaction depended on the solvent and the DHPs were obtained selectively in 1,4-dioxane as a solvent. Various 2,6-unsubstituted DHPs were synthesized in one pot in satisfactory yields. [Copyright &y& Elsevier]

Published
2011
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2. Multi-component synthesis of 2-amino-6-(alkylthio)pyridine-3,5-dicarbonitriles using Zn(II) and Cd(II) metal–organic frameworks (MOFs) under solvent-free conditions

Author

Thimmaiah, Muralidhara, Li, Peng, Regati, Sridhar, Chen, Banglin, and Zhao, John Cong-Gui

Subjects
*CARBONITRILES, *ORGANIC synthesis, *PYRIDINE, *ALDEHYDES, *MALONONITRILE, *CADMIUM, *ORGANIC solvents, *PHENOLS, *ZINC catalysts, *ORGANOMETALLIC chemistry
Abstract

Abstract: Multi-component synthesis of 2-amino-3,5-dicarbonitrile-6-thio-pyridines has been developed by using the reaction of aldehydes, malononitrile, and thiophenols in the presence of a Zn(II) or a Cd(II) metal–organic framework (MOF) as the heterogeneous catalyst. This protocol tolerates different functional groups on the substrates and does not require the use of any organic solvent. Moreover, the Zn(II) and Cd(II) MOF catalysts can be recovered and reused for a number of runs without loss of activity. [Copyright &y& Elsevier]

Published
2012
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