反应详情

2-Hydroxy-N-[2-({4-[4-hydroxy-3-methylanilino]quinazolin-5-yl}oxy)ethyl]-N-methylacetamide (100 mg), picolyl chloride hydrochloride (60 mg) and potassium carbonate (120 mg) were stirred in DMF (5 ml) to which was added 18-crown-6 (10 mg). The reaction was stirred at room temperature for 2 days. The DMF was removed in vacuo, water (5 ml) was added and then the suspension was extracted with DCM (2×5 ml). The DCM fraction was purified by chromatography using 2.5-5% of 10:1 DCM/methanol containing 0.5% ammonia (0.880) as eluent. The appropriate fractions were evaporated, and the residue was precipitated from DCM/diethyl ether to give the title product as a light yellow solid (28 mg, 23%); NMR spectrum (DMSO-d6, 100° C.) 2.29 (s, 3H), 3.00 (s, 3H), 3.90 (t, 2H), 4.16 (s, 2H), 4.50 (t, 2H), 5.20 (s, 2H), 7.01 (d, 1H), 7.16 (d, 1H), 7.34 (d, 2H), 7.51 (m, 2H), 7.55 (d, 1H), 7.79 (t, 1H), 7.83 (td, 1H), 8.41 (s, 1H), 8.57 (d, 1H), 9.62 (s, 1H); Mass spectrum MH+ 474.

1. customThe DMF was removed in vacuo, water (5 ml)
2. additionwas added
3. extractionthe suspension was extracted with DCM (2×5 ml)
4. customThe DCM fraction was purified by chromatography
5. customThe appropriate fractions were evaporated
6. customthe residue was precipitated from DCM/diethyl ether