Self-assembled ligand

Scheme 36.19 Use of self-assembled ligands in enantioselective hydrogenation.

A-T Base Pair Analogous Complementary Hydrogen Bonding for the Construction of Heterodimeric Self-Assembling Ligands... 

New Supramolecular Approaches in Transition Metal Catalysis Template-Ligand Assisted Catalyst Encapsulation, Self-Assembled Ligands and Supramolecular Catalyst Immobilization... 

Self-Assembled Ligands in Transition Metal Catalysis... 

S.3 Self-Assembled Ligands In Transition Metal Catalysis 217... 

Self-Assembled Ligand (SAL 11) Self-Assembled Bimetallic Catalyst (12)... 

Electrospray mass spectrometry (ESMS) is a powerful tool for gaining insight into the self-assembly process itself by allowing the identification of the species present in various solutions of such complicated mixtures of self-assembling ligands and metal ions leading up to the final architecture [9.94, 9.95]. 

Along with studies of the catalyst solution and stoichiometric reaction mixtures, the hydroformylation reaction was studied online under typical reaction conditions by connecting a pressurized autoclave (20 bar) directly to the mass spectrometer via a splitter. While this allowed them to identify new reaction intermediates they did not extract any kinetic data from the observed intermediates over time. Nevertheless, a new hydroformylation reaction mechanism for self-assembling ligands (in which the ligands play an active role in H2 activation) was considered based on... 

Related double-helical metal complexes have been used to investigate the role of cooperativity in self-assembly. Ligands (14a) and (14b) were allowed to react with CUBF4 to form the corresponding helicates (15a) and (15b). The formation of helicates (15a) and (15b) was confirmed in solution by spectrophotometric titration. Two sharp isosbestic points are seen in the spectrum, and the excess absorbance diagram is linear even at a very tow... 

J f-(6-Diphenylphosphinopyridine-2-carbonyl)-guanidine, another type of such self-assembling ligands, has been prepared in a 10 g scale by the condensation of diphenylphosphinopyridine-2-carboxyhc acid with Boc-protected guanidine in the presence of the peptide-couphng reaction BOP (Scheme 2.3) [9]. After removal of the Boc-protective group, the multifunctionalized phosphine was ready for screening in several rhodium-catalyzed tandem reactions [10]. 

Proton dynamics of the hydrogen bonds between two self-assembling ligands in a transition metal complex experiment and simulation. J. Phys. Chem. B, 116, 14406-14415. 

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