Tetrakis(trifluoromethanesulfonyl)propane: highly effective Brønsted acid catalyst for vinylogous Mukaiyama–Michael reaction of α,β-enones with silyloxyfurans
Method for Producing Compound Containing BIS (Perfluoroalkylsulfonyl) Methyl Group and Salt Thereof, and Solid Electrolyte Membrane Produced Using Same
申请人:CENTRAL GLASS COMPANY, LIMITED
公开号:US20150266816A1
公开(公告)日:2015-09-24
[Problem] To provide a method for producing a compound having a bis(trifluoroalkanesulfonyl)methyl group, which is a compound having a high acidity degree and hydrophobicity and useful as a raw material compound for a resin, and a salt thereof in a simple manner.
[Solution] A method for producing a compound containing a bis(perfluoroalkylsulfonyl)methyl group and represented by the following formula and a salt of the compound.
(Rf represents a perfluoroalkyl group having 1 to 12 carbon atoms. A represents a monovalent organic group. Y represents a single bond or a C
1
-C
4
linear, C
3
-C
4
branched or C
3
-C
4
cyclic alkylene group wherein each of some or all of hydrogen atoms may be substituted with a fluorine atom, a chlorine atom, a bromine atom or an iodine atom and an ether bond or an ester bond may be contained.)
The reaction of 1,1-bis(triflyl)ethylene generated in situ with enolizable carbonyls yielded δ-oxo-1,1-bis(triflyl)alkane derivatives. Their acidities in both the gas and solution phases were determined.
1,1,3,3‐Tetratriflylpropene (TTP): A Strong, Allylic C–H Acid for Brønsted and Lewis Acid Catalysis
作者:Denis Höfler、Manuel van Gemmeren、Petra Wedemann、Karl Kaupmees、Ivo Leito、Markus Leutzsch、Julia B. Lingnau、Benjamin List
DOI:10.1002/anie.201609923
日期:2017.1.24
Tetratrifylpropene (TTP) has been developed as a highly acidic, allylic C–H acid for Brønsted and Lewisacidcatalysis. It can readily be obtained in two steps and consistently shows exceptional catalytic activities for Mukaiyama aldol, Hosomi–Sakurai, and Friedel–Crafts acylation reactions. X‐ray analyses of TTP and its salts confirm its designed, allylic structure, in which the negative charge is
trifle of triflyl: N‐substituted anilines react with 1,1,3,3‐tetrakis(triflyl)propane to give a 2,2‐bis(triflyl)ethyl group at the para position of the ring. The product is a zwitterion with a carbanion and an ammonium moiety, and can be used as an acid catalyst for organic reactions (see scheme).
A regioselective synthesis of poly-substituted aryl triflones through self-promoting three component reaction
作者:Hikaru Yanai、Masaya Fujita、Takeo Taguchi
DOI:10.1039/c1cc12093j
日期:——
In the absence of any additional catalysts, the reactions of (CF3SO)2CH2, aldehydes, and 1,3-dienes gave gem-bis(triflyl)cyclohexenes in excellent yields with high regioselectivity. gem-Bis(triflyl)cyclohexene products can be easily converted to the corresponding aryl trifluoromethyl sulfones.