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Tetrabutylammonium dihydrogentrifluoride

The valuable intermediate 5-bromo-2-trifluoromethylaminopyridine 69 was prepared in one step from pyridyl methyl dithiocarbamate 68 by reaction with tetrabutylammonium dihydrogentrifluoride (TBAH2F3) and DBH in boiling dichloromethane (Equation 19) <1995TL563>. [Pg.54]

Tetrabutylammonium dihydrogentrifluoride, Bu4N H2p3 (1). The reagent is obtained by addition of BU4NF in CICH2CH2CI to an aqueous solution of HF/KF (2 1). The salt is isolated from the CICH2CH2CI layer after distillation. [Pg.285]

A reagent consisting of NIS and 70% HF-pyridine converts xanthates R-OCS2Me (R=alkyl) to R-OCF3 (R=primary) or R-F (R = benzylic, secondary, tertiary) by an oxidative desulfurization-lluorination reaction. The C-S bonds of the dithiocarbamates are directly replaced by C-F bonds using NIS and tetrabutylammonium dihydrogentrifluoride (TBAH2F3) (eq 14). ... [Pg.189]

See other pages where Tetrabutylammonium dihydrogentrifluoride is mentioned: [Pg.46]    [Pg.120]   
See also in sourсe #XX -- [ Pg.285 ]

See also in sourсe #XX -- [ Pg.285 ]



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Tetrabutylammonium

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