Welcome to the Straub Group

The captured tiger symbolizes the high electronic reactivity of the first isolated gold-carbene without heteroatom stabilization. Steric shielding by the ancillary ligand and the carbene's substituents rendered possible the full characterization of the emerald-green carbene complex with a significant Au=C back-bonding. The animated ball-and-stick model structure is derived from a single-crystal X-ray analysis: See gif animation (1024x768 resolution; 11 MB).

 

tiger

Isolierung eines nicht-Heteroatom-stabilisierten Goldcarbens
Isolation of a Non-Heteroatom-Stabilized Gold-Carbene Complex
Matthias W. Hussong, Frank Rominger, Petra Krämer, Bernd F. Straub*, Angew. Chem. 2014, 126, DOI: 10.1002/ange.201404032; Angew. Chem. Int. Ed. 2014, 53, DOI: 10.1002/anie.201404032 (announced as “hot paper”).

 

The sterically shielded gold complex IPr**AuNTf2 features remarkably high catalytic activity and stability. Alkyne hydration reactions and phenol syntheses proceed with high to excellent yields.

 

Gold Catalyst

Mechanistic Investigations of a Stable, Highly Active, Extremely Sterically Shielded Molecular Gold Catalyst
Simone G. Weber, David Zahner, Frank Rominger, Bernd F. Straub*, ChemCatChem 2013, 5, 2330-2335.

 

A dinuclear copper complex features an unprecedented activity in homogeneous CuAAC "click" catalysis. This is the first direct evidence for the presence of two copper(I) atoms in the rate-limiting step in the reaction of organoazides and terminal alkynes to 1,4-disubstituted 1,2,3-triazoles.

 

click

Highly Active Dinuclear Copper Catalysts for Homogeneous Azide-Alkyne-Cycloadditions
Regina Berg, Johannes Straub, Ella Schreiner, Steffen Mader, Frank Rominger, Bernd F. Straub*, Adv. Synth. Catal. 2012, 354, 3445-3450.

Advancements in the mechanistic understanding of the copper-catalyzed azide–alkyne cycloaddition
Regina Berg,* Bernd F. Straub*, Beilstein J. Org. Chem. 2013, 9, 2715-2750.

 

Our EurJIC issue cover picture external link shows a Madagascar day gecko in a coconut with a locust on top. Gecko toes hold on to slithery surfaces due to van der Waals forces, which are also relevant for the lipophilic altebate anion.

 

 

EurJIC May issue cover picture

A Lipophilic, Fluorine-Free, Thermostable, Inexpensive, S4-Symmetric, Highly Soluble, Weakly Coordinating, Protolabile Aluminate

 

Bernd F. Straub*, Michael Wrede, Karin Schmid, Frank Rominger, Eur. J. Inorg. Chem. 2010, 1907-1911.

 

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Letzte Änderung: 23.06.2014
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