Search

Your search keyword '"Khaddour, Zien"' showing total 18 results
Start Over Author "Khaddour, Zien"
18 results on '"Khaddour, Zien"'

3. Synthesis of functionalized naphthalenes, coumarines, quinolines, and isoflavones by chemo- and site-selective palladium-catalyzed coupling reactions

Author

Khaddour, Zien

Subjects
540 Chemistry & allied sciences
Abstract

I studied the site-selectivity of Suzuki cross-coupling reactions of the bis(triflate) of naphthoates, coumarines, and isoflavones. In addition, the chemo-selectivity of Suzuki cross-coupling reactions of naphthoates and quinolones containing bromide and triflate leaving groups were studied. In this context, were prepared various arylated pharmacologically relevant heterocycles which are not readily available by other synthetic methods.

Published
2015
Full Text
View/download PDF

15. Regioselective Suzuki-Miyaura Reactions of the Bis(triflate) of 4',7-Dihydroxyisoflavone.

Author

Hamdy, Aws M., Khaddour, Zien, Villinger, Alexander, and Langer, Peter

Subjects
*CATALYSIS research, *PALLADIUM, *SUZUKI reaction, *ISOFLAVONES, *COUPLING reactions (Chemistry)
Abstract

Arylated isoflavones are prepared by Suzuki-Miyaura crosscoupling reactions of the bis(triflate) of 4',7-dihydroxyisoflavone. The reactions proceed with very good regioselectivity in favor of the electronically more deficient position. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

16. Site-Selective Suzuki-Miyaura Cross-Coupling Reactions of the Bis(triflate) of Methyl 3,7-Dihydroxy-2-naphthoate.

Author

Khaddour, Zien, Eleya, Nadi, Akrawi, Omer A., Hamdy, Aws M., Patonay, Tamás, Villinger, Alexander, and Langer, Peter

Subjects
*NAPHTHALENE, *SUZUKI reaction, *ESTERS, *BIOCHEMICAL substrates, *COUPLING reactions (Chemistry)
Abstract

Arylated naphthalenes were prepared by Suzuki-Miyaura reactions of the bis(triflate) of methyl 3,7-dihydroxy-2-naphthoate. The reactions proceeded with very good site-selectivity in favor of the sterically less hindered position 7, despite the proximity of position 3 to the electron-withdrawing ester group which plays a decisive role for the site-selectivity of Suzuki-Miyaura reactions of related substrates. [ABSTRACT FROM AUTHOR]

Published
2013
Full Text
View/download PDF

17. ChemInform Abstract: Regioselective Suzuki-Miyaura Cross-Coupling Reactions of the Bis(triflate) of 4,7-Dihydroxycoumarin.

Author

Khaddour, Zien, Akrawi, Omer A., Suleiman, Ali S., Patonay, Tamas, Villinger, Alexander, and Langer, Peter

Subjects
*REGIOSELECTIVITY (Chemistry), *SUZUKI reaction, *COUMARINS, *BENZOPYRANS, *PHASE-transfer catalysis, *CARBON-hydrogen bonds
Abstract

Due to electronic reasons, the first cross-coupling reaction takes place at the sterically more hindered position. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

18. ChemInform Abstract: Chemoselective Suzuki-Miyaura Cross-Coupling Reactions of Methyl 4-Bromo-3-(trifluoromethylsulfonyloxy)-2-naphthoate.

Author

Khaddour, Zien, Eleya, Nadi, Akrawi, Omer A., Hamdy, Aws M., Patonay, Tamas, Villinger, Alexander, and Langer, Peter

Subjects
*SUZUKI reaction, *CARBOXYLIC acid derivatives
Abstract

The article discusses chemoselective Suzuki-Miyaura Cross-Coupling reactions of methyl 4-bromo-3-(trifluoromethylsulfonyloxy)-2-naphthoate and also presents chemical structure of derivatives of carboxylic acid.

Published
2014
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results