Reaktion #972943

Reaktionsgleichung

Na2CO3

3-(4-(4-bromo-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)pyrimidin-2-ylamino)propanenitrile

5-chloro-2-fluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline

5-chloro-2-fluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline

→

3-(4-(4-(3-amino-5-chloro-2-fluorophenyl)-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)pyrimidin-2-ylamino)propanenitrile

Lösungsmittel

DME

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeTwo separate
2. 2
   Sonstigereaction vials
3. 3
   SonstigeThe resulting mixture was sparged with Argon and Pd(PPh3)4
4. 4
   workup.ADDITIONwas added
5. 5
   SonstigeThe reaction vials
6. 6
   Sonstigewere sealed
7. 7
   Sonstigeirradiated at 120° C. for 20 minutes in a microwave reactor
8. 8
   Sonstigethe reaction was irradiated at 120° C. for 7 minutes
9. 9
   Sonstigepartitioned
10. 10
    SonstigeThe layers were separated
11. 11
    Einengenconcentrated
12. 12
    SonstigeThe resulting residue was partitioned between EtOAc (200 mL) and water (20 mL)
13. 13
    SonstigeThe layers were separated
14. 14
    Waschenthe organic portion was washed with aqueous 0.1 N HCl solution (40 mL), brine
15. 15
    Trocknendried (Na2SO4)
16. 16
    Einengenconcentrated

Vorschrift

Two separate reaction vials were each charged with 3-(4-(4-bromo-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)pyrimidin-2-ylamino)propanenitrile (I-1c, ˜200 mg, 0.43 mmol), a solution of 5-chloro-2-fluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (0.2 M in dioxane, 8 mL, 1.6 mmol), DME (8 mL) and aqueous 2.0 M Na2CO3 solution (2.3 mL, 4.6 mmol). The resulting mixture was sparged with Argon and Pd(PPh3)4 was added. The reaction vials were sealed and irradiated at 120° C. for 20 minutes in a microwave reactor. LCMS indicated near complete conversion. Additional 5-chloro-2-fluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (0.2 M in dioxane, 8 mL, 1.6 mmol) was added and the reaction was irradiated at 120° C. for 7 minutes. The reactions were allowed to cool to room temperature which partitioned upon standing. The layers were separated and the organic portions of the two reactions were combined and concentrated. The resulting residue was partitioned between EtOAc (200 mL) and water (20 mL). The layers were separated and the organic portion was washed with aqueous 0.1 N HCl solution (40 mL), brine, dried (Na2SO4), and concentrated to give 3-(4-(4-(3-amino-5-chloro-2-fluorophenyl)-2-cyclopropyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-5-yl)pyrimidin-2-ylamino)propanenitrile as a crude residue which was carried forward without further purification: LCMS(m/z) 528.2 (MH+), tR=0.90 minute.

Quelle