The synthesis and structural characterization of N-ortho-ferrocenyl benzoyl amino acid esters. The X-ray crystal structure of N-{ortho-(ferrocenyl)benzoyl}-l-phenylalanine ethyl ester
作者:David Savage、Gwen Malone、Steven R. Alley、John F. Gallagher、Alok Goel、Paula N. Kelly、Helge Mueller-Bunz、Peter T.M. Kenny
DOI:10.1016/j.jorganchem.2005.09.019
日期:2006.1
A series of N-ortho-ferrocenyl benzoyl amino acid ethylesters 3–9 have been prepared by coupling ortho-ferrocenyl benzoic acid 2 to the amino acid ethylesters of glycine, l-alanine, l-leucine, l-phenylalanine, β-alanine, 4-aminobutyric acid and (±)-2-aminobutyric acid using the conventional 1,3-dicyclohexylcarbodiimide, 1-hydroxybenzotriazole protocol. The compounds were fully characterized by a
Palladium-catalyzed cross-coupling reaction of bis(ferrocenyl)mercury with aryl iodides
作者:Alexey V Tsvetkov、Gennadij V Latyshev、Nikolai V Lukashev、Irina P Beletskaya
DOI:10.1016/s0040-4039(00)00535-9
日期:2000.5
Cross-coupling reactions of bis(ferrocenyl)mercury with aryl- and heteroaryl iodides were shown to be easy and convenient for the synthesis of monoarylsubstituted ferrocenes in high yields. The highly selective substitution of iodine atom in iodobromoarenes by the ferrocenyl unit was demonstrated.
A structural systematic study of semi-rigid ferrocene derivatives as a 3 × 3 metallocene isomer grid: p -/ m -/ o -(FcC 6 H 4 )CONH( p -/ m -/ o -C 6 H 4 )CO 2 Et, [Fc = (η 5 -C 5 H 5 )Fe(η 5 -C 5 H 4 )]
作者:John F. Gallagher、Steven Alley、Alan J. Lough
DOI:10.1016/j.ica.2016.01.028
日期:2016.4
The nine ethyl 4-/3-/2-[(4-/3-/2-ferrocenylphenyl)carbonyl]amino}benzoates, 4-/3-/2-FcC(6)H(4)-CONH-(4-/3-/2-C6H4)CO2Et, where Fc = (eta(5)-C5H5)Fe(eta(5)-C5H4)} have been synthesised by coupling either the para- ,meta- or ortho(ferrocenyl) benzoic acids (FcC(6)H(4)COOH), or their acid chlorides (FcC(6)H(4)COCl) with ethyl p-/m-/o-aminobenzoates, H2NC6H4CO2Et using (i) 1,3-dicyclohexylcarbodiimide (DCC), 1-hydroxy-benzotriazole (HOBt) or (ii) acid chloride coupling reactions. The isomers were characterised by spectroscopic techniques; single crystal X-ray diffraction structures of all nine isomers are reported and reveal the inherent linearity of the para- para substituted isomer (pp) compared to the twisted geometry of the ortho-ortho system (oo). Intra-/intermolecular interactions and distinct patterns of molecular aggregation are evaluated and correlated with physicochemical measurements showing distinct trends. A rich and somewhat congested amide center dot center dot center dot amide hydrogen bonding is noted in (mp) and (mm), contrasting with a lack of amide center dot center dot center dot amide interactions in (pp) and (pm) and unexpected amide center dot center dot center dot ester hydrogen bonding in dimers of (om). The series highlights the unpredictable nature of molecular assembly. (C) 2016 Elsevier B.V. All rights reserved.
Synthesis, characterization and in vitro anti-cancer activity of N-(ferrocenyl)benzoyl tri- and tetrapeptide esters
作者:Alan J. Corry、Áine Mooney、Dermot O’Sullivan、Peter T.M. Kenny
DOI:10.1016/j.ica.2009.01.021
日期:2009.7
N-ortho, N-meta and N-para-(ferrocenyl)benzoyl tri- and tetrapeptide esters (2-7) were prepared by coupling ortho, meta and para-ferrocenyl benzoic acids to the tri- and tetrapeptide ethyl esters of GlyGlyGly(OEt) and GlyGlyGlyGly(OEt) in the presence of N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide hydrochloride and 1-hydroxybenzotriazole. The compounds were characterized by a range of NMR spectroscopic techniques, mass spectrometry and cyclic voltammetry. The anti-proliferative effects of the ortho derivatives 2 and 5 were measured in vitro against H1299 lung cancer cells and both gave IC50 values greater than 50 mu M. Therefore, extending the length of the peptide chain had a negative effect on activity, relative to N-(ferrocenyl)benzoyl amino acid and dipeptide derivatives. (C) 2009 Elsevier B.V. All rights reserved.
Bis(ferrocenyl)mercury as a source of ferrocenyl moiety in Pd-catalyzed reactions of carbon–carbon bond formation
作者:Irina P Beletskaya、Alexei V Tsvetkov、Gennadij V Latyshev、Victor A Tafeenko、Nikolai V Lukashev
DOI:10.1016/s0022-328x(01)00979-2
日期:2001.12
The application of bis(ferrocenyl)mercury as a source of ferrocenyl group in Pd-catalyzed reactions with aryl halides, acid chlorides and electrophilic alkynes has been demonstrated. The formation of dimethyl-(Z)-2,3-di(ferrocenyl)-2-butenedioate in Pd-catalyzed addition of bis(ferrocenyl)mercury to dimethylacetylenedicarboxylate has been confirmed by X-ray analysis. (C) 2001 Elsevier Science BN. All rights reserved.