79388-23-1Relevant articles and documents
Lewis Acid Catalysis in Supercritical Carbon Dioxide. Use of Poly(ethylene glycol) Derivatives and Perfluoroalkylbenzenes As Surfactant Molecules Which Enable Efficient Catalysis in ScCO2
Komoto, Ichiro,Kobayashi, Shu
, p. 680 - 688 (2004)
Lewis acid catalysis in supercritical carbon dioxide (CO2) was investigated. While solubility of most organic materials is low in scCO 2, poly(ethylene glycol) derivatives or perfluoroalkylbenzenes were found to work as surfactants to dissolve organic materials in scCO2. In the presence of these molecules, Lewis acid catalyzed organic reactions such as aldol-, Mannich-, and Friedel-Crafts-type reactions proceeded smoothly in scCO2. Formation of emulsions was observed in these reactions, and the systems were studied in detail.
Mannich-type reaction catalyzed by silica-supported fluoroboric acid under solvent-free conditions
Chen, Weiyi,Li, Xinsheng,Lu, Jun
, p. 546 - 552 (2008/04/12)
Three-component Mannich-type reaction of aldehydes, aromatic amines, and silyl enolate proceeded smoothly to afford β-amino carbonyl compounds with good yields in the presence of a catalytic amount of HBF4-SiO2. Copyright Taylor & Francis Group, LLC.
Bronsted Acid-Catalyzed Mannich-Type Reactions in Aqueous Media
Akiyama, Takahiko,Takaya, Jim,Kagoshima, Hirotaka
, p. 338 - 347 (2007/10/03)
HBF4-catalyzed Mannich-type reaction of silyl enolates with aldimines took place smoothly in aqueous organic solvent to afford β-aminocarbonyl compounds in high yields. The HBF4-catalyzed Mannich-type reaction also proceeded smoothly