EDTA disodium salt → Terbinafine

Participants

Reaction Conditions

Reaction Steps

The mixture is cooled to 50° C. and 15.5 g (0.0572 mol) crude N-(trans-3-chloro-2-propenyl)-N-methyl-1-naphthalene-methylamine, 20 ml THF and 74 mg NiCl2 (0.77 molar percent) introduced. The reaction mixture is heated at 90°-95° C. for 1 hour, cooled to 20°/25° C. and 130 ml of a 2.5% (w/v) aqueous solution of EDTA disodium salt added, the phases are separated and the aqueous phase re-extracted with 70 ml chilled toluene. The combined organic phases are washed with 2×90 ml water and concentrated to a residue, thus giving 18.2 g (greater than theoretical yield) terbinafine with a purity of 83.6% (HPLC A %).

Provenance & Evidence