Carbon Tetrachloride → (R)-N,N-dimethyl-2-(4-(1-(thiazol-4-ylmethyl)-1H-indazol-5-ylamino)quinazolin-5-yloxy)propanamide

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Reaction Conditions

Reaction Steps

A mixture of (2R)—N,N-dimethyl-2-[(4-oxo-3,4-dihydroquinazolin-5-yl)oxy]propanamide (200 mg, 0.77 mmol), triphenylphosphine (603 mg, 2.3 mmol) and carbon tetrachloride (2.2 ml, 23 mmol) in 1,2-dichloroethane (5 ml) was stirred at 45° C. for 2 hours. 1-(1,3-Thiazol-4-ylmethyl)-1H-indazol-5-amine (184 mg, 0.8 mmol) was added and the solvents were evaporated under vacuum. Acetonitrile (5 ml) was added. The mixture was stirred at 75° C. for 2 hours. After cooling, the solvents were evaporated under vacuum. The residue was diluted in 6N methanolic ammonia and the solvents were evaporated under vacuum. The residue was purified by chromatography on silica gel (eluant: 3% to 5% methanol in DCM) to give the title compound as a beige foam (215 mg, 60%); NMR Spectrum (CDCl3) 1.73 (d, 3H), 3.06 (s, 3H), 3.14 (s, 3H), 5.43 (q, 1H), 5.80 (s, 2H), 6.81 (d, 1H), 6.93 (s, 1H), 7.48 (m, 2H), 7.60 (t, 1H), 7.84 (dd, 1H), 8.08 (s, 1H), 8.43 (s, 1H), 8.62 (s, 1H), 8.78 (s, 1H); Mass spectrum 474.

Provenance & Evidence