反应详情

温度

80 °C

To a mixture of (S)-tert-butyl 6-((1-amino-1-oxopropan-2-yl)amino)-2-chloropyrimidine-4-carboxylate (0.628 g, 2.09 mmol) in dioxane (10 mL) was added 2-(4-(4-fluorophenoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (0.791 g, 2.52 mmol), 2M aqueous Na2CO3 (2.1 mL, 4.2 mmol) and PdCl2(dppf) (0.087 g, 0.11 mmol). The reaction vessel was flushed with argon, sealed and heated at 80° C. overnight. After cooling, the reaction mixture was evaporated in vacuo and the residue chromatographed over silica gel with 50-90% EtOAc in hexanes. The product fractions were evaporated in vacuo to give a residue which was triturated with 5 mL 1:1 EtOAc/hexanes. The solid was filtered off, rinsed twice with 2 mL 1:1 EtOAc/hexanes, and dried under vacuum to give (S)-tert-butyl 6-((1-amino-1-oxopropan-2-yl)-amino)-2-(4-(4-fluorophenoxy)phenyl)pyrimidine-4-carboxylate as a cream-colored powder (0.537 g, 1.19 mmol, 57% yield). 1H NMR (400 MHz, DMSO-d6): 8.36 (2H, d, J=9.0 Hz), 7.97 (1H, d, J=6.6 Hz), 7.54 (1H, s), 7.31-7.24 (2H, m), 7.19-7.13 (2H, m), 7.09-6.99 (4H, m), 4.59-4.50 (1H, m), 1.55 (9H, s), 1.36 (3H, d, J=7.0 Hz). LC/MS: m/z=453.3 [M+H]+.

1. customThe reaction vessel was flushed with argon
2. customsealed
3. temperatureAfter cooling
4. customthe reaction mixture was evaporated in vacuo
5. customthe residue chromatographed over silica gel with 50-90% EtOAc in hexanes
6. customThe product fractions were evaporated in vacuo
7. customto give a residue which
8. customwas triturated with 5 mL 1:1 EtOAc/hexanes
9. filtrationThe solid was filtered off
10. washrinsed twice with 2 mL 1:1 EtOAc/hexanes
11. customdried under vacuum