[EN] CF3O-containing enaminoketones and their utilization for the preparation of CF3O-containing pyrazoles<br/>[FR] ÉNAMINOCÉTONES CONTENANT CF3O ET LEUR UTILISATION POUR LA PRÉPARATION DE PYRAZOLES CONTENANT CF3O
申请人:BAYER IP GMBH
公开号:WO2013120876A1
公开(公告)日:2013-08-22
The present invention pertains to novel enaminoketones containing a CF3O-group, novel pyrazole-derivatives containing a CF3O group as well as to a novel process for their preparation comprising aminoformylation of CF30-ketones and cyclization of the obtained CF30-enaminoketones with hydrazines to trifluoromethoxy pyrazoles.
CF3O-containing enaminoketones and their utilization for the preparation of CF3O-containing pyrazoles
申请人:Bayer CropScience AG
公开号:EP2628722A1
公开(公告)日:2013-08-21
The present invention pertains to novel enaminoketones containing a CF3O-group, novel pyrazole-derivatives containing a CF3O group as well as to a novel process for their preparation comprising aminoformylation of CF3O-ketones and cyclization of the obtained CF3O-enaminoketones with hydrazines to trifluoromethoxy pyrazoles.
A deeper insight into direct trifluoromethoxylation with trifluoromethyl triflate
作者:Olivier Marrec、Thierry Billard、Jean-Pierre Vors、Sergii Pazenok、Bernard R. Langlois
DOI:10.1016/j.jfluchem.2009.11.006
日期:2010.2
Commercially available fluorides (silver fluoride and n-tetrabutylammonium triphenyldifluorosilicate), combined with TFMT, allow a simple generation, in situ, of silver and n-tetrabutylammonium trifluoromethoxides which were able to react with electrophilic substrates. Silver trifluoromethoxide, which is usually more efficient than n-tetrabutylammonium trifluoromethoxide, converts, under mild conditions, primary aliphatic bromides and iodides, as well as primary and secondary benzylic or allylic bromides to the corresponding trifluoromethoxylated compounds. Several trifluoromethyl ethers, which could be valuable building-blocks, were prepared in such a way. (C) 2009 Elsevier B.V. All rights reserved.
CF3O-CONTAINING ENAMINOKETONES AND THEIR UTILIZATION FOR THE PREPARATION OF CF3O-CONTAINING PYRAZOLES