Ammonia → 2-{4-[3-(N,N-Dimethyl)amino-2-hydroxypropoxy]anilino}-4-(2,4-difluoroanilino)pyrimidine

Temperature

100 °C

2-Chloro-4-(2,4-difluoroanilino)pyrimidine (Reference Example A-2; 174 mg, 0.72 mmol) was dissolved in n-butanol (2 ml) and 4-[3-(N,N-dimethyl)amino-2-hydroxypropoxy]aniline hydrochloride (Reference Example D-1; 198 mg, 0.72 mmol) was added. The resulting suspension was treated with methanol until all the solid dissolved. The reaction mixture was heated at 100° C. for 12 hours and allowed to cool to ambient temperature. The reaction mixture was then basified to pH 9–10 using methanolic ammonia and evaporated onto silica (5 ml). The residue was purified by column chromatography eluting with methanol (15%): DCM:aqueous ammonia(1%). The resulting gum was recrystallized from acetonitrile to give the title product as a solid (124 mg, 41%). NMR (300 MHz): 2.18 (s, 6H), 2.34 (m, 2H), 3.78 (m, 1H), 3.88 (m, 2H), 4.75 (brd, 1H), 6.18 (d, 1H), 6.75 (d, 2H), 7.03 (t, 1H), 7.32 (t, 1H), 7.48 (d, 2H), 7.88 (dd, 1H), 7.95 (d, 1H), 8.88 (s, 1H), 8.95(s, 1H); m/z: (ES+) 416.4 (MH+).

1. dissolutiondissolved
2. temperatureto cool to ambient temperature
3. customevaporated onto silica (5 ml)
4. customThe residue was purified by column chromatography
5. washeluting with methanol (15%)
6. customThe resulting gum was recrystallized from acetonitrile

ORD record

ord-b755efa91aaf4546addb480a8da43398

Source dataset

uspto-grants-2007_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07176212B2