Reaktion #679598

Reaktionsgleichung

2-(2-(2-(2,5-dichloropyrimidin-4-yl)ethyl)phenyl)propanamide

tert-butyl 4-amino-1H-pyrazole-1-carboxylate

→

title compound 35

Ausbeute 52.0%

2-(2-(2-(2-(1H-Pyrazol-4-ylamino)-5-chloropyrimidin-4-yl)ethyl)phenyl)propanamide

Ausbeute 52.0%

Lösungsmittel

MeOH water

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe solvents were removed in vacuo
2. 2
   Sonstigethe crude residue was purified by silica gel column chromatography (Combiflash Rf, 0-15% MeOH in DCM)
3. 3
   Sonstigethe solvent was removed in vacuo
4. 4
   Sonstigethe solid was sonicated in cyclohexane
5. 5
   Filtrationfiltered
6. 6
   SonstigeThe residue was dried in vacuo

Vorschrift

A solution of 2-(2-(2-(2,5-dichloropyrimidin-4-yl)ethyl)phenyl)propanamide A30 (0.10 g, 0.31 mmol) and tert-butyl 4-amino-1H-pyrazole-1-carboxylate (0.17 g, 0.93 mmol) was heated in MeOH:water (10:1, 5 mL) at 90° C. for 18 hours. The solvents were removed in vacuo and the crude residue was purified by silica gel column chromatography (Combiflash Rf, 0-15% MeOH in DCM). The purified fractions were combined, the solvent was removed in vacuo and the solid was sonicated in cyclohexane and filtered. The residue was dried in vacuo to give the title compound 35 as a light yellow solid (0.060 g, 52%). 1H NMR (300 MHz, d6-DMSO) δ 1.34 (d, J=7.04 Hz, 3H), 2.92-3.11 (m, 4H), 3.86 (q, J=7.04 Hz, 1H), 6.85 (brs, 1H), 7.13-7.25 (m, 4H), 7.36-7.44 (m, 1H), 7.57-87 (m, 2H), 8.37 (s, 1H), 9.63 (s, 1H). LCMS-C: rt 4.72 min; m/z 371 [M+H]+.

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