Chloroacetyl chloride → 2-Chloro-N-[6-[2-(4-cyano-phenyl)-2H-pyrazol-3-yl]-7-methyl-8-(3-trifluoromethyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-2-yl]-acetamide

関与物質

反応手順

4-{5-[2-Amino-7-methyl-8-(3-trifluoromethyl-phenyl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl]-pyrazol-1-yl}-benzonitrile (Ex. 1, 400 mg, 0.87 mmol) was stirred in dry THF (5 mL) and DIPEA (0.3 mL, 1.765 mmol) was added followed by the dropwise addition of chloroacetyl chloride (104 μL, 1.258 mmol). After 45 mins, a further quantity (69 μL) of chloroacetyl chloride was added and stirring was continued for 18 hrs. The reaction mixture was partitioned between EtOAc and water, the organic layer washed with saturated brine and then dried (Na2SO4) and concentrated in vacuo. The resultant residue was purified by flash chromatography eluting with 65% EtOAc in cyclohexane to give title compound (334 mg).

情報源と証拠