693-65-2Relevant articles and documents
Catalytic reactions using superacids in new types of ionic liquids
Harmer, Mark A.,Junk, Christopher P.,Rostovtsev, Vsevolod V.,Marshall, William J.,Grieco, Liane M.,Vickery, Jemma,Miller, Robert,Work, Stella
, p. 517 - 525 (2009)
We will describe the use of superacids, in particular 1,1,2,2- tetrafluoroethanesulfonic acid (TFESA) and 1,1,2,3,3,3-hexafluoropropanesulfonic acid (HFPSA) in the presence of ionic liquids for improved chemical processing for a range of industrially important chemical reactions. In a number of cases the reaction mixture starts as a single phase, allowing for high reactivity, then separates into two phases upon completion of the reaction. This allows for ease of product separation P. T. Anastas and T. C. Williamson, Green Chemistry: Frontiers in Benign Chemical Syntheses and Processes, Oxford University Press, 1998.1
Synthesis of Benzyl Alkyl Ethers by Intermolecular Dehydration of Benzyl Alcohol with Aliphatic Alcohols under the Effect of Copper Containing Catalysts
Bayguzina,Gimaletdinova,Khusnutdinov
, p. 1148 - 1155 (2018/10/24)
Synthesis of benzyl alkyl ethers was performed in high yields by intermolecular dehydration of benzyl and primary, secondary, tertiary alcohols under the effect of copper containing catalysts. The formation of benzyl alkyl ethers occurs with participation of benzyl cation.
Cellulose oxidation and the use of carboxyl cellulose metal complexes in heterogeneous catalytic systems to promote suzuki-miyaura coupling and C?O bond formation reaction
Martins, Guilherme B. C.,Dos Santos, Marcelo R.,Rodrigues, Marcus V. R.,Sucupira, Renata R.,Meneghetti, Luisa,Monteiro, Adriano L.,Suarez, Paulo A. Z.
, p. 2064 - 2072 (2017/09/23)
This work shows the modification of microcrystalline cellulose by the selective oxidation of primary hydroxyl groups to carboxylate groups by a 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated system and its application as a heterogeneous ligand by ionic exchange with catalytic metals ions such as palladium, nickel and copper. Afterwards is described the application of the synthesized material as catalyst in coupling reactions such as Suzuki-Miyaura coupling and C?O bond formation reaction in different conditions, which are of great importance for the synthesis of drugs, natural products and new materials such as dendrimers, liquid crystals and polymers with magnetic and optical properties. The carboxyl cellulose matrix shows to have superior catalytic results as a ligand for all coupling reactions. Can be also highlighted the affinity of the carboxyl cellulose ligand in polar solvents such as water and alcohols and its application in mild conditions.
