Warning: Undefined array key "mm" in /www/wwwroot/www.ai-bt.com/si.php on line 10 Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /www/wwwroot/www.ai-bt.com/si.php on line 10 Syntheses, X-ray crystal structures, and solution behavior of monomeric, cationic, two-coordinate gold(I) pi-alkene complexes.

Literature DB >> 19368391

Syntheses, X-ray crystal structures, and solution behavior of monomeric, cationic, two-coordinate gold(I) pi-alkene complexes.

Timothy J Brown¹, Marina G Dickens, Ross A Widenhoefer.

Abstract

Treatment of a suspension of (IPr)AuCl [IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidine] and AgSbF(6) (1:1) with isobutylene at room temperature for 12 h led to isolation of [(NHC)Au(eta(2)-H(2)C=CMe(2))](+) SbF(6)(-) (1a) in 98% yield, which was characterized by spectroscopy and X-ray crystallography. A number of cationic gold pi-alkene complexes were isolated employing a procedure similar to that used to isolate 1a, two of which were analyzed by X-ray crystallography. Spectroscopy, X-ray crystallography, and alkene binding studies were in accord with a gold-(pi-alkene) interaction dominated by sigma-donation from the alkene to gold.

Entities: Chemical Disease Mutation Species

Mesh：

Substances：

Year: 2009 PMID： 19368391 PMCID： PMC2745538 DOI： 10.1021/ja9015827

Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419

13 in total

1. Reversible C-F bond formation and the Au-catalyzed hydrofluorination of alkynes.

Authors: Jennifer A Akana; Koyel X Bhattacharyya; Peter Müller; Joseph P Sadighi
Journal: J Am Chem Soc Date: 2007-06-05 Impact factor: 15.419

2. Thermally stable gold(I) ethylene adducts: [(HB{3,5-(CF(3))(2)Pz}(3))Au(CH(2)=CH(2))] and [(HB{3-(CF(3)),5-(Ph)Pz}(3))Au(CH(2)=CH(2))].

Authors: H V Rasika Dias; Jiang Wu
Journal: Angew Chem Int Ed Engl Date: 2007 Impact factor: 15.336

Syntheses, X-ray crystal structures, and solution behavior of monomeric, cationic, two-coordinate gold(I) pi-alkene complexes.

1. Reversible C-F bond formation and the Au-catalyzed hydrofluorination of alkynes.

2. Thermally stable gold(I) ethylene adducts: [(HB{3,5-(CF(3))(2)Pz}(3))Au(CH(2)=CH(2))] and [(HB{3-(CF(3)),5-(Ph)Pz}(3))Au(CH(2)=CH(2))].

Review 3. Gold-catalyzed organic transformations.

Review 4. Gold-catalyzed cycloisomerizations of enynes: a mechanistic perspective.

5. Thermodynamic data for olefin and acetylene complexes of transition metals.

6. Recent developments in enantioselective gold(I) catalysis.

7. Gold(I) ethylene and copper(I) ethylene complexes supported by a polyhalogenated triazapentadienyl ligand.

8. Allene formation by gold catalyzed cross-coupling of masked carbenes and vinylidenes.

Review 9. Ligand effects in homogeneous Au catalysis.

10. Synthesis and characterization of the gold(I) tris(ethylene) complex [Au(C2H4)3][SbF6].

1. Mechanistic surprises in the gold(I)-catalyzed intramolecular hydroarylation of allenes.

2. Alkylgold complexes by the intramolecular aminoauration of unactivated alkenes.

3. Gold(I)-Catalyzed Intramolecular Hydroamination of N-Allylic,N'-Aryl Ureas to form Imidazolidin-2-ones.

4. Mechanistic study of gold(I)-catalyzed intermolecular hydroamination of allenes.

5. Gold(I)-catalyzed amination of allylic alcohols with cyclic ureas and related nucleophiles.

6. Gold(I)-catalyzed intramolecular amination of allylic alcohols with alkylamines.

7. Regio- and stereoselective synthesis of fluoroalkenes by directed Au(I) catalysis.

8. On the impact of steric and electronic properties of ligands on gold(I)-catalyzed cycloaddition reactions.

9. σ-π-Diauration as an alternative binding mode for digold intermediates in gold(i) catalysis.

10. Synthesis and equilibrium binding studies of cationic, two-coordinate gold(I) π-alkyne complexes.