N-Methoxy-N-methylbenzamide → 2-Anilino4(2-benzoyl-1-isopropylimidazol-5-yl)pyrimidine

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

n-Butyllithium (3.12 ml of 1.6 M solution in hexane, 5.0 mmol) was added to a stirred solution of 2-anilino-4-(2-formyl-1-isopropylimidazol-5-yl)pyrimidine (Example 10; 558 mg, 2.0 mmol) in anhydrous THF (20 ml) cooled to −70° C. The mixture was stirred for 30 minutes and then N-methoxy-N-methylbenzamide (660 mg, 4.0 mmol) was added and the reaction mixture was allowed to warm and stirred at ambient temperature for 18 hour. The reaction mixture was quenched with water (20 ml), and extracted with EtOAc (4×25 ml). The organic extracts were washed with brine (2×50 ml), dried and the volatiles removed by evaporation and the residue triturated with ether and the solid collected by filtration to give the title compound (303 mg, 43%) as a pale yellow crystalline solid. NMR (CDCl3): 1.55-1.70 (m, 8H), 5.52-5.68 (sept, 1H), 6.99 (d, 1H), 7.09 (dt, 1H), 7.18 (br s, 1H), 7.30-7.40 (m, 2H), 7.45-7.54 (m, 2H), 7.55 (s, 1H), 7.56-7.62 (m, 3H), 8.09 (d, 2H), 8.49 (d, 1 H); m/z 384.

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