期刊
TETRAHEDRON LETTERS
卷 54, 期 39, 页码 5391-5394出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2013.07.120
关键词
Pyrazoles; 1,2,3-Triazoles; (E)-2-Styryl-4H-chromen-4-ones; Hydrazine hydrate
资金
- University of Aveiro [SFRH/BD/45107/2008]
- Fundacao para a Ciencia e a Tecnologia [SFRH/BD/45107/2008]
- European Union [SFRH/BD/45107/2008]
- QREN [SFRH/BD/45107/2008]
- FEDER [SFRH/BD/45107/2008]
- COM-PETE [PEst-C/QUI/UI0062/2013]
- Fundacao para a Ciencia e a Tecnologia
- FSE [SFRH/BD/45107/2008]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/45107/2008] Funding Source: FCT
An efficient two step synthetic methodology of new 5(4)-aryl-4(5)-[3(5)-(2-hydroxyphenyl)-1H-pyrazol-5(3)-yl]-1H-1,2,3-triazole dyads was established. The reaction of (E)-2-styryl-4H-chromen-4-ones, used as building blocks, with sodium azide, gave 4(5)-aryl-5(4)-(chromon-2-yl)-1H-1,2,3-triazoles bearing either electron-donating or electron-withdrawing substituents in their styryl moiety which upon reaction with hydrazine hydrate afforded the expected pyrazoles in moderate to very good yields. (c) 2013 Elsevier Ltd. All rights reserved.
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