6907-73-9Relevant articles and documents
Montmorillonite as a heterogeneous catalyst in the efficient, mild and one pot synthesis of Schiff bases under solvent-free conditions
Naeimi, Hossein,Rabiei, Khadijeh
experimental part, p. 208 - 212 (2012/07/03)
A mild and efficient method has been reported for preparation of Schiff base ligands through condensation reaction of various aromatic aldehydes and ketones with different aromatic amines in the presence of montmorillonite as a heterogeneous catalyst under solvent free conditions. The advantages of this friendly, economically, environmentally and mild method are such as; simplicity of the reaction procedure, reusability of catalyst, simple work-up, high product yields and very short reaction times.
Nucleophilic trifluoromethylation of imines under acidic conditions
Levin, Vitalij V.,Dilman, Alexander D.,Belyakov, Pavel A.,Struchkova, Marina I.,Tartakovsky, Vladimir A.
supporting information; experimental part, p. 5226 - 5230 (2009/06/06)
A general method for the trifluoromethylation of imines by using Me 3SiCF3 under acidic conditions is described. The reaction is promoted by hydrofluoric acid generated in situ from KHF2 and either TFA or TfOH. A new chemoselectivity pattern was achieved, as the C=N bond was found to be more reactivate than the carbonyl group. The trifluoromethylation reaction is believed to proceed by concerted transfer of the CF3 group from the silicon atom to the iminium electrophile. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
New entries toward 3,3-difluoropiperidines
Verniest, Guido,Surmont, Riccardo,Van Hende, Eva,Deweweire, Arvid,Deroose, Frederik,Thuring, Jan Willem,De Kimpe, Norbert
, p. 5458 - 5461 (2008/12/21)
(Chemical Equation Presented) Difluoropiperidines attract considerable interest from organic and medicinal chemists, but their synthesis is often problematic. This paper describes a new synthetic pathway toward valuable 3,3-difluoropiperidines starting fr