Cesium carbonate → HCID 69671629, Verbindung

Temperatur

120 °C

A mixture of 4-chloro-2-(2,6-dichlorophenyl)-2H-pyrazolo[4,3-c]pyridine (52 mg, 0.175 mmol), 6-cyclopropylpyrimidin-4-ylamine (26 mg, 0.193 mmol), Pd2(dba)3 (8 mg, 0.0088 mmol), Xantphos (10.1 mg, 0.0175 mmol) and cesium carbonate (114 mg, 0.35 mmol) in dioxane (1.5 mL) was de-gassed and purged with nitrogen and the reaction mixture was heated at 120° C. in the microwave for 1 hour. The resultant mixture was filtered and washed with dioxane. The filtrate was concentrated under reduced pressure and the resultant residue was purified by silica gel flash chromatography (0-100% ethyl acetate in cyclohexane) to afford the title compound as a yellow solid (30 mg, 43% yield). 1H NMR (400 MHz, DMSO-d6): δ 9.56 (d, J=0.9 Hz, 1H), 8.94 (d, J=1.0 Hz, 1H), 8.05 (d, J=7.3 Hz, 1H), 7.87-7.83 (m, 2H), 7.79-7.74 (m, 1H), 7.62 (dd, J=7.3, 0.9 Hz, 1H), 7.39 (s, 1H), 2.34-2.26 (m, 1H), 1.19-1.12 (m, 4H). LCMS (Method B): RT=3.17 min, m/z: 397 [M+H+].

1. customwas de-gassed
2. custompurged with nitrogen
3. filtrationThe resultant mixture was filtered
4. washwashed with dioxane
5. concentrationThe filtrate was concentrated under reduced pressure
6. customthe resultant residue was purified by silica gel flash chromatography (0-100% ethyl acetate in cyclohexane)

ORD-Eintrag

ord-22ab8f4b18924161aa1054980232ee96

Quelldatensatz

uspto-grants-2016_04

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09309240B2