Toluene → N-(2-methyl-2H-indazol-6-yl)-2-{[2-(3-methyl-ureido)-pyridin-4-ylmethyl]-amino}-nicotinamide

関与物質

反応条件

反応手順

A suspension of 2-methyl-2H-indazol-6-ylamine [Davies J. Chem. Soc.; 1955; 2412-2419] (809 mg, 5.5 mmol) in DCE (13.5 mL) was treated at 0° C. consecutively with, trimethylaluminium (2 M) in toluene (4.23 mL, 8.46 mmol), 2-{[2-(3-methyl-ureido)-pyridin-4-ylmethyl]-amino}-nicotinic acid methyl ester (1.34 g, 4.23 mmol) and DCE (20 mL). The reaction mixture was placed under a nitrogen atmosphere and heated for 10 hours at 85° C. (bath temperature). On cooling the reaction was poured into aqueous sodium-potassium tartrate solution (150 mL) and partitioned between EtOAc and water. The organic phase was washed with brine, dried, filtered and concentrated in vacuo. The residue was purified by chromatography on silica gel (Gradient elution: 100% CH2Cl2 to 90% CH2Cl2/10% MeOH) to give N-(2-methyl-2H-indazol-6-yl)-2-{[2-(3-methyl-ureido)-pyridin-4-ylmethyl]-amino}-nicotinamide (964 mg, 53%) as a solid; Mp. 205-207° C.

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