74209-87-3Relevant academic research and scientific papers
Bismuth(III) Triflate: A Water-Stable Equivalent of Trimethylsilyl Triflate for the Catalysis of Mukaiyama Aldol Reactions
Roux, C. Le,Ciliberti, L.,Laurent-Robert, H.,Laporterie, A.,Dubac, J.
, p. 1249 - 1251 (2007/10/03)
Bismuth tris-trifluoromethanesulfonate (1) has been found to be an efficient catalyst for the Mukaiyama aldol-type reactions.The catalytic activity of this catalyst is higher than the one previously reported for the rare earth triflates M(OTf)3 (M = Sc, L
Novel Reactive Silyl Enolates. Highly Stereoselective Aldol and Michael Reactions without Catalysts
Kobayashi, Shu,Nishio, Koichi
, p. 2647 - 2649 (2007/10/02)
Novel silyl enolates, prepared in situ from ketones and dimethylsilyl ditriflate (Me2Si(OTf)2) in the presence of a tertiary amine, reacted smoothly with electrophiles such as aldehydes, acetals, or α,β-unsaturated ketones without catalyst at -78 deg C to
TRIMETHYLSILYL TRIFLATE CATALYZED ALDOL-TYPE REACTION OF ENOL SILYL ETHERS AND ACETALS OR RELATED COMPOUNDS
Murata, Shizuaki,Suzuki, Chikusa,Noyori, Ryoji
, p. 4259 - 4276 (2007/10/02)
Trimethylsilyl triflate with or without added hindered tertiary amines catalyzes directed condensation of enol trimethylsilyl ethers with acetals, orthoformate, or 2-acetoxytetrahydrofuran or -pyrans to give the corresponding β-alkoxy carbonyl compounds.R
Crossed aldol-type reactions catalyzed by rhodium complexes
Sato, Susumu,Matsuda, Isamu,Izumi, Yusuke
, p. 223 - 238 (2007/10/02)
Crossed aldol-type reactions of enol trimethylsilyl ethers with aldehydes and ketones are smooth when carried out with a catalytic amount of a rhodium complex, Rh4(CO)12 or X (X=PF6 and ClO4; COD=cycloocta-1,5-diene, DPPB=1,4-bis(diphenylphosphino)butane), under neutral conditions.A suitable catalyst enables the isolation of three different types of aldol reaction product, β-trimethylsiloxy ketones, β-hydroxy ketones, and α,β-unsaturated ketones.Rh4(CO)12 and ClO4 also catalyze the reaction of enol trimethylsilyl ethers with acetals or ketals, whereas PF6 does not.When ClO4 is used as the catalyst, this type of aldol reaction is extended to the one-pot synthesis of trisubstituted furans from enol trimethylsilyl ether and α-trimethylsiloxy acetal.
Trityl Salts Catalyzed Aldol-Type Reaction of Alkyl Enol Ethers with Acetals
Murakami, Masahiro,Minamikawa, Hiroyuki,Mukaiyama, Teruaki
, p. 1051 - 1052 (2007/10/02)
β-Alkoxy ketones are synthesized in good yields by the reaction of alkyl enol ethers with acetals in the presence of a catalytic amount of trityl salts.Of enol ethers, methoxymethyl (MOM) enol ether exhibits an enhanced reactivity as a nucleophile.
TRIMETHYLSILYL TRIFLATE IN ORGANIC SYNTHESIS
Noyori, R.,Murata, S.,Suzuki, M.
, p. 3899 - 3910 (2007/10/02)
Trimethylsilyl triflate is a powerful silylating agent for organic compounds and acts as a catalyst which accelerates a variety of nucleophilic reactions in aprotic media.The reactions proceed via one-center, electrophilic coordination of the silyl group to hetero functional groups and exhibit unique selectivities.
