反应详情

温度

95 °C

To a 25 mL pear flask were added tert-butyl (S)-4-(5-(1-aminoethyl)-1-methyl-1H-pyrrolo[3,2-b]pyridin-6-yl)piperazine-1-carboxylate (0.076 g, 0.21 mmol) and 2,4-diamino-6-chloropyrimidine-5-carbonitrile (0.054 g, 0.32 mmol) in DMSO (1 mL) to give a yellow suspension. Triethylamine (0.088 mL, 0.63 mmol) was added and the mixture was heated to 95° C. for 2 hours. The reaction appeared to stall so 1 equivalent of triethylamine was added. After a total of 4 hours of heating, the mixture was cooled and the reaction mixture was partitioned between saturated NaHCO3 and ethyl acetate. The aqueous layer was extracted with ethyl acetate. The organic layers were combined, dried over MgSO4, filtered, and concentrated. The crude product was purified by preparative HPLC (acid mode, 20-25% ACN/water gradient). The product-containing fractions were combined, neutralized with a small amount of saturated NaHCO3, concentrated in vacuo to remove ACN, and then extracted with EtOAc. The organic layers were combined, dried over MgSO4, filtered, and concentrated in vacuo to give the title compound as a pale beige solid (37 mg, 36%). 1H NMR (400 MHz, CDCl3) δ ppm 1.43 (s, 11H), 1.87 (br s, 2H), 2.72 (br s, 2H), 2.97 (br s, 2H), 3.70 (s, 3H), 4.80-5.11 (m, 4H), 5.92 (br s, 1H), 6.59 (d, J=2.27 Hz, 1H), 6.76 (d, J=6.06 Hz, 1H), 7.16 (d, J=2.78 Hz, 2H), 7.32 (s, 1H); ESI-MS m/z [M+H]+ calc'd for C24H32N10O2, 493. found 493.

1. customto give a yellow suspension
2. additionwas added
3. temperatureAfter a total of 4 hours of heating
4. temperaturethe mixture was cooled
5. customthe reaction mixture was partitioned between saturated NaHCO3 and ethyl acetate
6. extractionThe aqueous layer was extracted with ethyl acetate
7. dry with materialdried over MgSO4
8. filtrationfiltered
9. concentrationconcentrated
10. customThe crude product was purified by preparative HPLC (acid mode, 20-25% ACN/water gradient)
11. concentrationconcentrated in vacuo
12. customto remove ACN
13. extractionextracted with EtOAc
14. dry with materialdried over MgSO4
15. filtrationfiltered
16. concentrationconcentrated in vacuo