Bispyridylamides?coordination chemistry and applications in catalytic reactions

Belda, Oscar; Moberg, Christina

doi:10.1016/j.ccr.2004.08.025

Cited by 99 publications

(42 citation statements)

References 63 publications

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“…ortho-phenylene [3,4] or ethylene [3,5] spacer. Analogous ligands with aliphatic amine functions instead of the pyridine rings are also known.…”

Section: Introductionmentioning

confidence: 99%

“…The rearrangement upon deprotonation has been shown to be fully reversible and the starting complexes can be retrieved upon protonation of the two amidate functions. Synthesis of the trinuclear zinc complex 11 with coordination of the two amidate nitrogen atoms to a third metal center was achieved via deprotonation of (H 6 -4a)-(CF 3 CO 2 ) 4 by three equivalents of diethylzinc. In protic solvents 11 rapidly rearranges to give the entropically favored dinuclear complex 8 with elimination of one equivalent of zinc trifluoroacetate.…”

Section: Introductionmentioning

confidence: 99%

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Zinc(II), Copper(II), and Nickel(II) Complexes of Bis(tripodal) Diamide Ligands – Reversible Switching of the Amide Coordination Mode upon Deprotonation

et al. 2010

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A series of dinuclear Zn(II), Cu(II) and Ni(II) complexes of two new bis-tripodal ligands with aromatic (H 2 -4a) and aliphatic (H 2 -4b) diamide spacers has been synthesized and structurally characterized. Each of the two tripodal entities of the neutral dinucleating ligands coordinates to one metal ion via three amine functions and a carbonyl oxygen atom of the amide groups. Either trifluoroacetate counterions or solvent molecules complete the trigonal-bipyramidal (Zn, 5a), square-pyramidal (Cu, 6a and 6b), and octahedral (Ni, 7a and 7b) coordination environment at the metal centers. Complexes 5a, 6a, and 7a with the phenylene-bridged diamide ligand are readily deprotonated by potassium tert-butoxide effecting a rearrangement of the dinuclear complexes. In the resulting zinc and copper complexes 8 and 9, one of the metal centers is coordinated by three amine functions of a tripodal subunit and the two amidate nitrogen atoms of the deprotonated ligand 4a 2-while the coordination geometry of

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“…ortho-phenylene [3,4] or ethylene [3,5] spacer. Analogous ligands with aliphatic amine functions instead of the pyridine rings are also known.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Zinc(II), Copper(II), and Nickel(II) Complexes of Bis(tripodal) Diamide Ligands – Reversible Switching of the Amide Coordination Mode upon Deprotonation

et al. 2010

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“…It shows that palladium was attached on ligand via nitrogen atom. The previous studies stated the appearance of band at the range 509-467 cm -1 showed the confirmations of metal coordinate on the respective ligand via nitrogen atom [13].…”

Section: Nn'-bis(3-pyridylmethyl)benzene-14-dicarboxamide (L)mentioning

confidence: 81%

Synthesis, Characterization and Coordination Chemistry of N,N'-bis(3-pyridylmethyl)benzene-1,4-dicarboxamide with Palladium and Ruthenium Salts

Idris¹,

Kadir²,

Khandaker³

2017

Asian J. Chem.

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“…[10] By comparing the results of reactions of ligands with substituted pyridines it was found that derivatives with π-donor substituents resulted in particularly high enantioselectivities and high branched/linear ratios.…”

Section: Introductionmentioning

confidence: 99%

Carbohydrate‐Based Pyridine‐2‐carboxamides for Mo‐Catalyzed Asymmetric Allylic Alkylations

et al. 2009

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Bis(pyridine-2-carboxamides) were prepared from 1,2-diamines obtained from α-D-glucose and α-D-mannose. The ligands were assessed in molybdenum-catalyzed asymmetric allylic alkylations (AAA) by using both methyl (E)-3-phenyl-2-propenyl and methyl rac-1-phenyl-2-propenyl carbonates and dimethyl malonate as nucleophile under microwave irradiation. High enantioselectivity (99 % ee) and high regioselectivity (49:1 in favour of the branched isomer) were ob-

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Bispyridylamides?coordination chemistry and applications in catalytic reactions

Cited by 99 publications

References 63 publications

Zinc(II), Copper(II), and Nickel(II) Complexes of Bis(tripodal) Diamide Ligands – Reversible Switching of the Amide Coordination Mode upon Deprotonation

Zinc(II), Copper(II), and Nickel(II) Complexes of Bis(tripodal) Diamide Ligands – Reversible Switching of the Amide Coordination Mode upon Deprotonation

Synthesis, Characterization and Coordination Chemistry of N,N'-bis(3-pyridylmethyl)benzene-1,4-dicarboxamide with Palladium and Ruthenium Salts

Carbohydrate‐Based Pyridine‐2‐carboxamides for Mo‐Catalyzed Asymmetric Allylic Alkylations

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