58649-09-5Relevant articles and documents
Cage Like Al-KIT-5 Mesoporous Materials for C-C Bond Formation Reactions under Solvent Free Conditions
Baruah, Pranjal K.,Dutta, Prantu,Kalita, Pranjal
, p. 2037 - 2045 (2015)
The C-C bond forming reactions are of fundamental importance in chemistry. As a result there is ever growing interest for chemists to develop new methods for C-C bond formation. We report here three dimensional nano-cage mesoporous aluminosilicate materia
BR?NSTED-ACIDIC FLUOROALKYL PHOSPHONATES
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Paragraph 0215-0219; 0220, (2018/10/04)
The invention relates to Br?nsted-acidic fluoroalkyl phosphonates as bifunctional catalysts and to processes for the preparation thereof.
Organotin perfluorooctanesulfonates as air-stable Lewis acid catalysts: Synthesis, characterization, and catalysis
An, De Lie,Peng, Zhihong,Orita, Akihiro,Kurita, Akinobu,Man-E, Sumiyo,Ohkubo, Kei,Li, Xingshu,Fukuzumi, Shunichi,Otera, Junzo
, p. 1642 - 1647 (2007/10/03)
The reactions of 1,3-dichloro-1,1,3,3-tetrabutyldistannoxane and di-alkyltin dihalides with silver perfluoro-octanesulfonate provided the corresponding sulfonates as hydrates. The number of water molecules (n) of hydration was dependent on the conditions. The distannoxane derivative was identified as n from 0.5 to 6, while in the hydrated mononuclear species and DMSO complexes n varied widely from 4 to 13. 119Sn NMR spectroscopy and conductivity measurements indicated the ionic dissociation of these compounds in solution. These compounds exhibited unusually high solubility in polar organic solvents. The ionic dissociation together with facile hydration probably causes the unusual solubility. The Lewis acidity of these compounds was found to be high among organotin derivatives on the basis of ESR spectra of Superoxide/ metal-ion complexes. In contrast to well-known organotin Inflates, these compounds suffered no hydrolysis upon storage in open air. The high catalytic activity of the distannoxane 1 was exemplified for various carboncarbon bond-forming reactions, such as Mukaiyama-aldol as well as -Michael reactions and allylation of aldehydes.