26902-80-7Relevant academic research and scientific papers
N-heterocyclic carbene catalyzed trifluoromethylation of carbonyl compounds
Song, Jinhua J.,Tan, Zhulin,Reeves, Jonathan T.,Gallou, Fabrice,Yee, Nathan K.,Senanayake, Chris H.
, p. 2193 - 2196 (2007/10/03)
(Chemical Equation Presented) A novel N-heterocyclic carbene (NHC) catalyzed trifluoromethylation reaction of carbonyl compounds was discovered. Both enolizable and nonenolizable aldehydes and α-keto esters undergo facile trifluoromethylation with TMSCF3 at room temperature in the presence of only 0.5-1 mol % of the commercially available NHC (1), providing CF3-substituted alcohols in good yields. Selective trifluoromethylation of aldehydes over ketones can be achieved under NHC catalysis. These conditions are mild and simple and tolerate a variety of functional groups.
Study for the determination of the absolute configuration of fluoromethylated secondary alcohols by the modified Mosher method
Xiao, Ling,Yamazaki, Takashi,Kitazume, Tomoya,Yonezawa, Tetsuo,Sakamoto, Yoshitake,Nogawa, Kouji
, p. 19 - 23 (2007/10/03)
Application of the modified Mosher method using high-field FT 1H NMR to the 2-methoxy-2-phenyl-2-trifluoromethyl acetic acid (MTPA) derivatives of fluorinated secondary alcohols indicates that this method may be generally used to determine the absolute configurations of these materials.
Efficient synthesis of optically pure 1,1,1-trifluoro-2-alkanols through lipase-catalyzed acylation in organic media
Hamada, Hiroki,Shiromoto, Mizuho,Funahashi, Makoto,Itoh, Toshiyuki,Nakamura, Kaoru
, p. 2332 - 2336 (2007/10/03)
Lipase-catalyzed esterification was successfully utilized for the optical resolution of 1,1,1-trifluoro-2-alkanol 1 when racemic 1 was treated with lipase from Candida antarctica in hexane in the presence of molecular sieves (4 A) to provide the corresponding (S)-acetate 2 in an optically pure state. Alkanol 1 is known as an important component of liquid crystal compounds which display remarkable ferroelectric liquid crystal (FLC) characteristics. Five types of optically pure alkanols, i.e., 1,1,1-trifluoro-2-octanol (1a), 1,1,1-trifluoro-2-nonanol (1b), 1,1,1-trifluoro-2-decanol (1c), 1,1,1-trifluoro-2-undecanol (1d), and 1,1,1-trifluoro-8-(benzyloxy)-2-octanol (1e), were thus obtained by the lipase-catalyzed acylation.
Electroreductive coupling of halofluoro compounds with aldehydes
Shono,Kise,Oka
, p. 6567 - 6570 (2007/10/02)
Electroreductive intermolecular coupling of halofluoro compounds such as 1,1,1-trichloro-2,2,2-trifluoroethane, methyl chlorodifluoroacetate, and perfluoroalkyl halides with aldehydes took place effectively in the presence of chlorotrimethylsilane and one of the coupling products, 2,2-dichloro-3,3,3-trifluoro-1-phenyl-1-propranol, was selectively convertible to a variety of compounds with using the electroreduction as a key reaction.
ELECTROSYNTHESIS OF ALCOHOLS FROM ORGANIC HALIDES AND KETONES OR ALDEHYDES
Sibille, Soline,d'Incan, Esther,Leport, Louis,Perichon, Jacques
, p. 3129 - 3132 (2007/10/02)
The electrosynthesis of a wide range of alcohols from organic halides and ketones or aldehydes is achieved under simple and mild conditions in an undivided electrolytic cell using different sacrificial anodes.
