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Graham T.W.,Kanata Chemical Technologies Inc. | Tsang C.-W.,Kanata Chemical Technologies Inc. | Chen X.,Kanata Chemical Technologies Inc. | Guo R.,Kanata Chemical Technologies Inc. | And 7 more authors.
Angewandte Chemie - International Edition | Year: 2010

Hydrogen on tap: A homogeneous catalyst system for the rapid and quantitative solvolysis of ammonia borane (AB) has been developed. The iridium catalyst is remarkably stable and can be reused with no observable degradation in activity. In the absence of solvent, the mixture of catalyst and AB efficiently generates hydrogen upon exposure to water vapor, thereby resulting in a system with considerable hydrogen storage capacity (see picture). © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Abdur-Rashid K.,Kanata Chemical Technologies Inc. | Lough A.J.,University of Toronto
Acta Crystallographica Section E: Structure Reports Online | Year: 2012

In the title complex, [Ru(C19H25N2O2)H(C44H32P2)] ·C6H6, the RuII ion is in a distorted octahedral coordination environment with the hydride H atom trans to the tertiary carbinamine N atom, giving an H-Ru-N angle of 160.8 (12)°. The equatorial sites are occupied by two P atoms, the secondary carbinamine N atom and a coordinated C atom.


Patent
Kanata Chemical Technologies Inc. | Date: 2011-09-09

The present disclosure relates to biaryl diphosphine ligands of the formula (B), processes for the production of the ligands and the use of the ligands in metal catalysts for asymmetric synthesis. The disclosure also relates to intermediates used for the production of the biaryl diphosphine ligand. (Formula (B))


Guo R.,Kanata Chemical Technologies Inc. | Lu S.,Kanata Chemical Technologies Inc. | Chen X.,Kanata Chemical Technologies Inc. | Tsang C.-W.,Kanata Chemical Technologies Inc. | And 4 more authors.
Journal of Organic Chemistry | Year: 2010

(Chemical Equation Presented) Protic aminophosphines with multiple chiral centers were synthesized in good yields and high purity by the nucleophilic ring-opening of N-protected cyclic sulfamidates with metal phosphides, followed by hydrolysis and deprotection. This synthetic approach is clean, scalable, and high yielding. The method provides an efficient alternative route for the synthesis of chiral aminophosphines. © 2009 American Chemical Society.


Tsang C.-W.,Kanata Chemical Technologies Inc. | Chen X.,Kanata Chemical Technologies Inc. | Guo R.,Kanata Chemical Technologies Inc. | Jia W.,Kanata Chemical Technologies Inc. | And 5 more authors.
Chimica Oggi | Year: 2010

The derivatization of aminophosphine ligands into their corresponding ammonium or ammonium-phosphonium salts with protic acids is reported. The resulting salts are, in general, much more tolerant of ambient conditions and represent convenient alternatives to the often highly air-sensitive unprotected ligands. The salts have been used to prepare transition metal complexes identical to those obtained from unprotected ligands by simple, in situ neutralization with base. These materials have also been found to be convenient synthons, affording a convenient alternate route to useful transition-metal catalysts when used in the absence of base.

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