Copper(II) arylhydrazone complexes as catalysts for C H activation in the Henry reaction in water

Авторы: Maa Zhen, Gurbanov Atash V., Maharramov Abel M., Guseinov Firudin I., Kopylovich Maximilian N., Zubkov Fedor I., Mahmudov Kamran T., Pombeiro Armando J.L.
Журнал: Journal of Molecular Catalysis A: Chemical
Год издания: 2016
Издательство: Elsevier BV
Местоположение издательства: Netherlands
DOI: 10.1016/j.molcata.2016.05.030
Аннотация: tThree new water-soluble copper(II) complexes [Cu(HL)(H2O){(CH3)2NCHO}] (1), [Cu(H2L)2(im)4]·CH3OH(2) and [Cu(HL)(CH3OH)]2(2-py) (3) were synthesized from copper(II) nitrate and sodium (Z)-2-(2-(1,3-dioxo-1-(phenylamino)butan-2-ylidene)hydrazinyl)benzene-sulfonate (NaH2L), in the absence (for 1)and presence of imidazole (im) (for 2) or pyrazine (py) (for 3), and fully characterized. The complexes1–3 have been tested as stereoselective C H activating catalysts for the model nitroaldol (Henry) conden-sation of nitroethane with various aldehydes in water. 1 was the most active catalyst affording 64−87%yields with syn/anti diasteroselectivities up to 77:23.
Добавил в систему: Гусейнов Фирудин Ильясович

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