Structural studies of asymmetric hydrogenation. IV. The crystal structures of [(R)-1-cyanoethyl][(S)(-)-.ALPHA.-methylbenzylamine]bis(dimethylglyoximato)cobalt(III) at 293 K and 173 K.

スポンサーリンク

概要

• 論文の詳細を見る

• The structure of [(<I>R</I>)-1-cyanoethyl][(<I>S</I>)(−)-α-methylbenzylamine]bis(dimethylglyoximato)cobalt(III) has been determined by X-ray analysis at 293 K and 173 K. The crystal is monoclinic; the space group is P2<SUB>1</SUB>; <I>Z</I>=2, with <I>a</I>=8.665(2), <I>b</I>=13.485(3), <I>c</I>=9.584(3) Å and β=96.95(3)° at 293 K, and <I>a</I>=8.786(2), <I>b</I>=13.500(2), <I>c</I>=9.243(2) Å, and β=98.09(3)° at 173 K. The structures were deduced by the heavy-atom method and refined by the block-diagonal least-squares technique to the final <I>R</I> values of 0.055 and 0.038 for 1940 and 1948 observed reflections at 293 K and 173 K respectively. The bis (dimethylglyoximato)cobalt moiety is twisted around its long axis because of the steric repulsion from the (<I>R</I>)-1-cyanoethyl group and the optically active amine. The degree of the twist is the same as that observed in the structure of [(<I>R</I>)-1-(methoxycarbonyl)ethyl] [(<I>R</I>)(+)-α-methylbenzylamine]bis(dimethylglyoximato)cobalt(III). The conformation of the amine ligand was ascertained to be influenced by the substituted alkyl group through the bis(dimethylglyoximato)cobalt moiety.

• 公益社団法人 日本化学会の論文

著者

• Takeuchi Seiji

  Niigata College Of Pharmacy

• OHGO Yoshiaki

  Niigata College of Pharmacy

• Ohashi Yuji

  Laboratory Of Animal Science Kyoto Prefectural University

• Sasada Yoshio

  Laboratory of Chemistry for Natural Products, Faculty of Science, Tokyo Institute of Technology

関連論文

• A Facile Synthesis of 2,3-Dihydroxyketones from 1,2-Diketones and Aldehydes Using Samarium Diiodide
• Solid-State Specific and Unidirectional Photoisomerization of 3-Substituted Propyl to 1-Substituted Propyl Cobaloxime Complexes via 2-Substituted Propyl Complexes
• Chiral Lattice-Controlled Asymmetric Photoisomerization of (2-Cyanoethyl)cobaloximes in the Solid State
• Formal Synthesis of Squalamine from Desmosterol
• The SmI_2 Mediated Cross-Coupling Reaction of Aldehydes with α-Diketones in Their Aqueous Forms
• Asymmetric Synthesis of Ketones by SmI_2-Mediated Allylation or Benzylation of Ketenes Followed by Enantioselective Protonation
• Solvent-dependent Stereochemical Anomaly in the Nucleophilic Addition of Ester-derived Enolate to Bicyclo[3,3,0]octan-2-one System of Diacetone Glucos-3-ulose
• Strain Gauge Force Transducer and Its Application in a Pig Model to Evaluate the Effect of Probiotic on Colonic Motility
• Lactobacillus casei Strain Shirota-fermented Milk Stimulates Indigenous Lactobacilli in the Pig Intestine
• Stimulation of Indigenous Lactobacilli by Fermented Milk Prepared with Probiotic Bacterium, Lactobacillus delbrueckii subsp. bulgaricus Strain 2038, in the Pigs
• Stimulation of Cytokine Gene Expression in a Murine Macrophage Cell Line by Lactic Acid Bacteria Isolated from Bhutanese Dried Yak Cheese
• The Effect of Lactobacillus casei Strain Shirota on the Cecal Fermentation Pattern Depends on the Individual Cecal Microflora in Pigs
• Crystalline-State Reaction of Cobaloxime Complexes. 18. Metastable Intermediate Structure Observed by a New X-Ray Diffractometer for Rapid Data Collection
• Influences of Prebio Support^ (Mixture of Fermented Products of Lactobacillus gasseri OLL2716 and Propionibacterium freudenreichii ET-3) on the Composition and Metabolic Activity of Fecal Microbiota in Calves
• Acetogenic Bacteria Mainly Contribute to the Disposal of Hydrogen in the Colon of Healthy Japanese
• Influences of Lactobacillus and Cellobiose on the Composition and Metabolic Activity of Fecal Microbiota in Dogs given Boiled Chicken Head and Cow Milk
• Reactions in Solid and Constrained State. IV.^ Preparation and Solid-State Photoracemization of Optically Active Alkyl Cobaloxime Complexes
• β-α Photoisomerization of Cobaloxime Complexes in the Solid State. 5.^ Reaction Rate Reduced by a Hydrogen Bond
• Crystal Structure of [(S)-1, 2-Bis(allyloxycarbonyl)ethyl]bis-(dimethylglyoximato)[(R)-1-phenylethylamine]cobalt(III) Isopropanol Solvate
• Analysis of Acetogenic Bacteria in Human Feces with Formyltetrahydrofolate Synthetase Sequences
• The Composition of Intestinal Bacteria Affects the Level of Luminal IgA
• Strain Gauge Force Transducer and Its Application in a Pig Model to Evaluate the Effect of Probiotic on Colonic Motility
• Crystal and molecular structure of (ethyl methacrylate)-bis(triphenylphosphine)nickel(0).
• Complexes between nucleotide base and amino acid. II. Crystal structure of 5-bromocytosine: N-tosyl-L-glutamic acid.
• Crystal and molecular structures of octaethylporphinium(monocation) triiodide and its benzene hemisolvate.
• The crystal and molecular structure of N-carboxy-.GAMMA.-benzyl-L-glutamate anhydride.
• Crystal and molecular structure of methyl D-tetronitroside.
• Structural studies of fortimicins. IV. The crystal structure of fortamine sulfate trihydrate and the anion effect on fortamine conformation.
• Conformation of condensed polycyclic aromatic hydrocarbons. II. The molecular and crystal structure of violanthrene B (dibenzo(a, rst)naphtho(8,1,2-cde)pentaphene).
• Crystal Structure of p-Bromobenzylideneacetone
• Crystal structure of adenine-1-(2-carboxyethyl)uracil (1:1) complex. A model for interactions of amino acid side chains with nucleic acid base pair.
• Crystal structures of mixed ligand copper(II) complexes containing L-amino acids. I. L-asparaginato-L-histidinatocopper(II) and its hydrate.
• Structural studies of asymmetric hydrogenation. IV. The crystal structures of [(R)-1-cyanoethyl][(S)(-)-.ALPHA.-methylbenzylamine]bis(dimethylglyoximato)cobalt(III) at 293 K and 173 K.
• Crystal and molecular structure of antibiotic gilvocarcin M.
• A model for interactions of amino acid side chains with Watson-Crick base pair of guanine and cytosine. Crystal structures of 9-(2-carboxyethyl)guanine and its crystalline complex with 1-methylcytosine.
• Preparation and Reaction of Optically Active Organotransition Metal Complexes. III. Preparation of Optically Active (1-(Methoxycarbonyl)ethyl)cobaloximes Coordinated with Various Axial Ligands and Their Photoracemization. Remarkable Steric Effect of Axial
• Preparation and reaction of optically active organotransition metal complexes. II. Preparation and photoracemization of optically active (1-cyanoethyl)cobaloxime complexes coordinated with various axial ligands.
• Preparations and properties of optically active (alkyl)bis(dimethylglyoximato)cobalt(III) complexes.
• The crystal structure of 13H-dibenz(a,de)anthracen-13-one.
• The Crystal Structure of Pyrazinic Acid
• Conformation of condensed polycyclic aromatic hydrocarbons. I. The molecular and crystal structure of anthra(2,1,9,8-hijkl)-benzo(de)naphtho(2,1,8,7-stuv)pentacene.
• The crystal and molecular structure of echinosporin.
• Structure of Fusariocin C, A Cytotoxic Metabolite from Fusarium Moniliforme
• Asymmetric hydrogenation catalyzed by bis(disubstituted glyoximato)cobalt(II)(L)-chiral cocatalyst system. Effect of structural variation of ligands and hydrogen pressure.
• The Crystal and Molecular Structure of 2,5-Distyrylpyrazine
• Asymmetric reactions. X. Asymmetric hydrogenation catalyzed by bis(dimethylglyoximato)cobalt(II)-chiral cocatalyst (amino alcohol) system.
• The Crystal and Molecular Structure of Butein Monohydrate, Isolated from Dahlia variabilis
• Asymmetric hydrogenation catalyzed by the (achiral base)bis(dimethylglyoximato)cobalt(II)-chiral cocatalyst system. The preparation of a new type of chiral cocatalyst and its application to the asymmetric hydrogenation of methyl N-(acetylamino)acrylate an
• The Crystal and Molecular Structure of Miyaconitine Hydrobromide Dihydrate
• The crystal structure of a stable benzocyclobutene. II. 2,7-Di-t-butyl-10,10,11,11-tetracyano-4,5,9,12-tetraphenyltetracyclo[6.4.0.03,6.09,12]dodeca-1(8),2,4,6-tetraene.
• Asymmetric hydrogenation of N,N'-dimethyl-5-alkylidene- and arylmethylenehydantoins catalyzed by (achiral base)bis(dimethylglyoximato)cobalt(II)-chiral cocatalyst system.
• The Crystal and Molecular Structure of 4,10b-Methano-8H-benzo[ab]cyclodecen-8-one
• Asymmetric hydrogenation catalyzed by (achiral base)bis(dimethylglyoximato)cobalt(II)-chiral cocatalyst system.
• Structural studies of asymmetric hydrogenation. II. The crystal structure of methyl(R(+)-.ALPHA.-methylbenzylamine)bis(dimethylglyoximato)cobalt(III) benzene solvate.
• Structural studies on fortimicins. III. The crystal and molecular structure of fortamine dihydrochloride.

もっと見る 閉じる

スポンサーリンク