反应详情

p-Cresol (1.0 equiv.) was placed in a round bottom flask with DMSO (1.0 M) and sodium hydride (0.9 equiv). The reaction mixture was stirred at ambient temperature for 5 min. To the mixture was added 4-chloropyrimidine-5-carbonitrile (1.0 equiv.). The reaction was stirred at 25° C. for 2 h. The reaction mixture was partitioned between ethyl acetate and water. The organic layer was washed with brine (3×) and dried over sodium sulfate. Volatile organic solvents were removed under reduced pressure to give 4-(p-tolyloxy)pyrimidine-5-carbonitrile (41.6% yield) as a light brown solid which was used in the next step without further purification. 1H NMR (400 MHz, DMSO-d6) δ (ppm) 9.24 (s, 1H), 8.94 (s, 1H), 7.29 (dd, J=0.8, 8.6 Hz, 2H), 7.21-7.16 (m, 2H), 2.34 (s, 3H). MS (ESI) m/z 211.7 [M+1]+.

1. stirringThe reaction was stirred at 25° C. for 2 h
2. customThe reaction mixture was partitioned between ethyl acetate and water
3. washThe organic layer was washed with brine (3×)
4. dry with materialdried over sodium sulfate
5. customVolatile organic solvents were removed under reduced pressure