Stereoisomerism

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Publications associées (29)

Cationic Iridium(III) Complexes with Two Carbene-Based Cyclometalating Ligands: Cis Versus Trans Isomers

Michael Graetzel, Mohammad Khaja Nazeeruddin, Rosario Scopelliti

A series of cationic iridium(III) complexes with two carbene-based cyclometalating ligands and five different NN bipyridine and 1,10-phenanthroline ancillary ligands is presented. For the first time in the frame of a rarely studied class of bis(heterole ...

Amer Chemical Soc2015

Synthesis, structural determination, theoretical studies and catalytic activity of Mn(II) complex of N-isonicotinyl phosphoric triamide ligand

Kurt Schenk, Farzaneh Fadaei Tirani

synthesized and characterized by H-1, C-13, P-31 NMR and IR spectroscopies. The reaction of MnCl2 center dot 4H(2)O with L led to the formation of a new 3D system {MnL2Cl2}(n)center dot 34CH(3)OH (C-1). X-ray crystallographic data revealed that the ligand ...

Elsevier Science Sa2015

Molecular Hydrogen Messengers Can Lead to Structural Infidelity: A Cautionary Tale of Protonated Glycine

Thomas Rizzo, Antoine Louis Claude Masson, Evan Rowland Williams

The effects of tagging protonated glycine with either He or with between 1 and 14 H2 molecules on the infrared photodissociation (IRPD) spectra and the ion structure was investigated. Differences in the IR spectra with either a single He atom or H2 molecul ...

American Institute of Physics2015

Phosphoric Acid Catalyzed Desymmetrization of Bicyclic Bislactones Bearing an All-Carbon Stereogenic Center: Total Syntheses of (−)-Rhazinilam and (−)-Leucomidine B

Qian Wang, Jieping Zhu, Jean-Baptiste Gualtierotti, Delphine Pasche

In the presence of a catalytic amount of an imidodiphosphoric acid, enantioselective desymmetrization of bicyclic bislactones by reaction with alcohols took place smoothly to afford enantiomerically enriched mono acids having an all-carbon stereogenic cent ...

Wiley-Blackwell2014

Phosphoric Acid Catalyzed Diastereo- and Enantioselective Synthesis of Substituted 1,3-Diaminotetralins

Jieping Zhu

The reaction of anilines and phenylacetaldehydes in the presence of chiral phosphoric acid afforded optically active 1,2-trans, 2,3-cis 1,3-diaminotetralins in high yields with excellent diastereo- and enantioselectivities. The trans/cis product was readil ...

Amer Chemical Soc2014

Microhydration Effects on the Encapsulation of Potassium Ion by Dibenzo-18-Crown-6

Thomas Rizzo, Oleg Boyarkine, Yoshiya Inokuchi

We have measured electronic and conformer-specific vibrational spectra of hydrated dibenzo-18-crown-6 (DB18C6) complexes with potassium ion, K+center dot DB18C6 center dot(H2O)(n) (n = 1-5), in a cold, 22-pole ion trap. We also present for comparison spect ...

American Chemical Society2014

Conformational control of anticancer activity: the application of arene-linked dinuclear ruthenium(II) organometallics

Paul Joseph Dyson, Rosario Scopelliti, Laure Menin, Benjamin Samuel Murray

Dinuclear metal complexes have emerged as a promising class of biologically active compounds which possess unique anticancer activity. Here, we describe a novel series of arene-linked dinuclear organometallic Ru(II) complexes, where the relative conformati ...

2014

Synthesis and Antimycobacterial Activity of 2,1 '-Dihydropyridomycins

Stewart Cole, Ruben Hartkoorn

Dihydropyridomycins 2 and 3, which lack the characteristic enol ester moiety of the potent antimycobacterial natural product pyridomycin (1), have been prepared from L-Thr, R- and S-hydroxy isovaleric acid, and 3-pyridinecarboxaldehyde. The 2R isomer 2 sho ...

Amer Chemical Soc2013

Reactivity and Biological Properties of a Series of Cytotoxic PtI2(amine)(2) Complexes, Either cis or trans Configured

Angela Casini

Six diiodido-diamine platinum(II) complexes, either cis or trans configured, were prepared, differing only in the nature of the amine ligand (isopropylamine, dimethylamine, or methylamine), and their antiproliferative properties were evaluated against a pa ...

2012

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