Sorafenib → Sorafenib Tosylate

Beteiligte Stoffe

Reaktionsschritte

903 g of 4-{4-[({[4-chloro-3-(trifluoromethyl)phenyl]amino}carbonyl)amino]phenoxy}-N-methyl-pyridine-2-carboxamide, prepared as described in WO 00/42012, are initially charged in 2700 ml of ethanol. 451.7 g of p-toluenesulfonic acid monohydrate are dissolved in 1340 g of ethanol and added dropwise at room temperature. The suspension is stirred at room temperature for 1 hour, then filtered off with suction, and the residue is washed three times with 830 ml each time of ethanol. The drying is effected at 50° C. under reduced pressure with supply of air. 1129.6 g of the title compound in the polymorph II are obtained.

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