5325-67-7Relevant academic research and scientific papers
Catalytic asymmetric aldol reactions in aqueous media using chiral bis-pyridino-18-crown-6 - Rare earth metal triflate complexes
Hamada, Tomoaki,Manabe, Kei,Ishikawa, Shunpei,Nagayama, Satoshi,Shiro, Motoo,Kobayashi, Sho
, p. 2989 - 2996 (2007/10/03)
Catalytic asymmetric aldol reactions in aqueous media have been developed using Pr(OTf)3 and chiral bis-pyrdino-18-crown-6 1. In the asymmetric aldol reaction using rare earth metal triflates (RE(OTf)3) and 1, slight changes in the i
Organic synthesis inside particles in water: Lewis acid-surfactant-combined catalysts for organic reactions in water using colloidal dispersions as reaction media
Manabe, Kei,Mori, Yuichiro,Wakabayashi, Takeshi,Nagayama, Satoshi,Kobayashi, Shu
, p. 7202 - 7207 (2007/10/03)
A Lewis acid - surfactant-combined catalyst (LASC) has been developed and applied to Lewis acid-catalyzed organic reactions in water. LASCs are composed of water-stable Lewis acidic cations such as scandium and anionic surfactants such as dodecyl sulfate
Lewis acid catalysis in aqueous media: Copper(II)-catalyzed aldol and allylation reactions in a water-ethanol-toluene solution
Kobayashi, Shu,Nagayama, Satoshi,Busujima, Tsuyoshi
, p. 959 - 960 (2007/10/03)
Cu(OTf)2 was found to be a stable Lewis acid in aqueous media and to activate carbonyl compounds effectively. Aldol reactions of silyl enol ethers with aldehydes and allylation reactions of tetraallyltin with carbonyl compounds proceeded smooth
Rare Earth Metal Complexes as Water-Tolerant Lewis Acid Catalysts in Organic Synthesis
Kobayashi,Hashiya,Ishitani,Moriwaki,Nagayama
, p. 193 - 202 (2007/10/03)
Rare earth metal triflates are stable in aqueous media and can act as Lewis acid catalysts in several carbon-carbon bond forming reactions. This article describes some of these reactions; aldol and Mannich-type reactions in aqueous solution, and Friedel-Crafts acylations and Fries rearrangement in organic solvents. The reactions proceeded smoothly in the presence of a catalytic amount of the triflate under mild conditions. Moreover, the catalysts could be recovered after the reactions were completed and could be reused.
Lanthanide Triflates as Water-Tolerant Lewis Acids. Activation of Commercial Formaldehyde Solution and Use in the Aldol Reaction of Silyl Enol Ethers with Aldehydes in Aqueous Media
Kobayashi, Shu,Hachiya, Iwao
, p. 3590 - 3596 (2007/10/02)
Lanthanide trifluoromethanesulfonates (triflates), especially ytterbium triflate (Yb(OTf)3), were found to be stable Lewis acids in water.In the presence of a catalytic amount of lanthanide triflate, formaldehyde in water solution (commercial formaldehyde
The aldol reaction of silyl enol ethers with aldehydes in aqueous media
Kobayashi,Hachiya
, p. 1625 - 1628 (2007/10/02)
The aldol reaction of silyl enol ethers with aldehydes is successfully carried out in aqueous media by using a lanthanide trifluoromethanesulfonate as a catalyst. Water soluble aldehydes are applicable and the catalyst can be recovered and reused in this
