Triphenylphosphine → 5-(Bromomethyl)-4-methyl-2-[4-(trifluoromethyl)phenyl]-1,3-thiazole

Beteiligte Stoffe

Reaktionsschritte

Cool (10° C.) a solution of [4-methyl-2-(4-trifluoromethyl-phenyl)-thiazol-5-yl]-methanol (Example 2, 753 mg, 3 mmol) in THF (12 mL) add triphenylphosphine (864 mg, 3.3 mmol) followed by freshly recrystallized N-bromosuccinimide (587 mg, 3.3 mmol). On complete addition, remove the cold bath and stir continuously for 45 min. Concentrate the resulting mixture under vacuum and purify the residue by flash chromatography (elute with 10% ethyl acetate/10% dichloromethane in heptane) to give the title compound as an orange solid (846 mg).

Herkunft & Nachweise