Zinc metal–organic frameworks: efficient catalysts for the diastereoselective Henry reaction and transesterification
作者:Anirban Karmakar、M. Fátima C. Guedes da Silva、Armando J. L. Pombeiro
DOI:10.1039/c4dt00219a
日期:——
Three new amidoterephthalate ligands are utilized to synthesize three new zinc(ii) metal–organic frameworks which act as heterogeneous catalysts for the diastereoselective nitroaldol (Henry) and transesterification reactions.
Nitroaldol-reaction of aldehydes in the presence of non-activated Mg:Al 2:1 hydrotalcite; a possible new mechanism for the formation of 2-aryl-1,3-dinitropropanes
Commercially available, non-activated 2:1 Mg:Al hydrotalcite catalyzes the nitroaldol reaction between a variety of aromatic and aliphatic aldehydes and simple nitroalkanes such as nitromethane and nitroethane. A new mechanism is proposed for the formation of the 1,3-dinitropropanes. The threo/erythro diastereoselectivity of the nitroethane-adducts was determined by 1H NMR spectroscopy and was found
Amide functionalized metal–organic frameworks for diastereoselective nitroaldol (Henry) reaction in aqueous medium
作者:Anup Paul、Anirban Karmakar、M. Fátima C. Guedes da Silva、Armando J. L. Pombeiro
DOI:10.1039/c5ra14637b
日期:——
The metal–organic frameworks [Zn2(L)2(1,4-BDC)]n·2n(DMF) (L = 4-(pyridin-4-ylcarbamoyl)benzoate; BDC = benzenedicarboxylate) and [Cu(L)2]n·4n(DMF)·n(H2O) work as catalysts for the diastereoselective nitroaldol reaction in aqueous medium.
Zinc amidoisophthalate complexes and their catalytic application in the diastereoselective Henry reaction
作者:Anirban Karmakar、M. Fátima C. Guedes da Silva、Susanta Hazra、Armando J. L. Pombeiro
DOI:10.1039/c4nj02371d
日期:——
5-Propionamidoisophthalic acid and 5-benzamidoisophthalic acid are used to synthesize new zinc(ii) complexes which act as heterogeneous catalysts for the diastereoselective nitroaldol (Henry) reaction.
The synthesis, structure, topology and catalytic application of a novel cubane-based copper(<scp>ii</scp>) metal–organic framework derived from a flexible amido tripodal acid
作者:Anirban Karmakar、Clive L. Oliver、Somnath Roy、Lars Öhrström
DOI:10.1039/c4dt03087g
日期:——
A novel chiral metal–organicframework, [Cu4(HL)2(H2O)4(MeO)4]n (1), has been successfully synthesized from a tripodal flexible ligand (2S,2′S,2′′S)-2,2′,2′′-(benzenetricarbonyltris(azanediyl))tripropanoic acid (H3L). Compound 1 was characterized by IR and X-ray powder diffraction analysis. The structure was determined by X-ray single crystal diffraction analysis revealing that 1 possesses a 3D network