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Diphenylammonium triflate

Diphenylammonium triflate was useful for direct esterification of carboxylic... [Pg.1414]

Diphenylammonium triflate, toluene, 80°C, 33-97% yield. This catalyst can also be used to prepare esters from carboxylic acids and alcohols, 78-96%... [Pg.548]

Other recent relevant developments have been the replacement of conventional acid catalysts with greener analogues. Direct esterification of carbo Q lic acids and alcohols continues to be a focus of attention. As examples, diphenylammonium triflate 8 and bulky diatylammonium sulfonates were shown to catalyse ester condensation of carboxylic acids and alcohols efficiently, and without the need for azeotropic water removal in the former case. Pentafluorophenylammonium triflate 9 was shown to be an efficient and cost-effective catalyst not only for esterification, but also for thioesterification, transesterification and macrolactone formation without requiring a dehydrating system. The superior catal)4ic efficiency of 9 relative to 8 was ascribed to the lower basicity of the pentafluoroaniline counter amine compared to diphenylamine. In related work, polyaniline... [Pg.60]

Esterification In 2000, Tanabe et al. reported that diphenylammonium triflate ([Ph2NH3] [OTf 1 10mol%) catalyzed the ester condensation reaction of... [Pg.56]

See other pages where Diphenylammonium triflate is mentioned: [Pg.210]    [Pg.182]    [Pg.312]    [Pg.129]    [Pg.130]    [Pg.416]    [Pg.420]    [Pg.26]    [Pg.210]    [Pg.210]    [Pg.182]    [Pg.312]    [Pg.129]    [Pg.130]    [Pg.416]    [Pg.420]    [Pg.26]    [Pg.210]   
See also in sourсe #XX -- [ Pg.129 ]

See also in sourсe #XX -- [ Pg.416 ]



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