反应详情

温度

110 °C

Prepared using General Procedure 10. Into a degassed solution of (S)-2-(4-(tert-butyl)benzamido)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)propanoate INT-13 (1.0 g, 2.0 mmol), Na2HCO3 (420 mg, 3.9 mmol), and 5-bromo-2-iodopyrimidine (615 mg, 2.2 mmol) in 2/2/1 ACN/THF/H2O was added Pd(dppf)Cl2 (140 mg, 0.2 mmol). The reaction mixture was heated at 110° C. for 1 h in a microwave reactor. The reaction mixture was concentrated, dissolved in DCM and washed with H2O. The organic layer was dried over Na2SO4, concentrated, and purified by chromatography EA/hexanes) to provide 630 mg (58%) of tert-butyl (S)-3-(4-(5-bromopyrimidin-2-yl)phenyl)-2-(4-(tert-butyl)benzamido)propanoate INT-14. LCMS-ESI (m/z) calculated for C28H32BrN4O3: 538.5; no m/z observed, tR=4.66 min (Method 1). 1H NMR (400 MHz, CDCl3) δ 8.84-8.78 (s, 2H), 8.31 (t, J=7.0 Hz, 2H), 7.75-7.64 (m, 2H), 7.46-7.38 (m, 2H), 7.30 (dd, J=12.9, 7.1 Hz, 2H), 6.65 (d, J=7.2 Hz, 1H), 5.10-4.94 (m, 1H), 3.43-3.20 (m, 2H), 1.45 (s, 9H), 1.32 (s, 9H).

1. customPrepared
2. concentrationThe reaction mixture was concentrated
3. dissolutiondissolved in DCM
4. washwashed with H2O
5. dry with materialThe organic layer was dried over Na2SO4
6. concentrationconcentrated
7. custompurified by chromatography EA/hexanes)