تفاعل #974669

معادلة التفاعل

1-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydropyridin-2(1H)-one

(1H-benzo[d]imidazol-2-yl)(4-(3-chloropyrazin-2-yloxy)phenyl)methanone

potassium acetate

dioxane H2O

→

desired product

4-(3-(4-(1H-BENZO[D]IMIDAZOLE-2-CARBONYL)PHENOXY)PYRAZIN-2-YL)-1-METHYL-5,6-DIHYDROPYRIDIN-2(1H)-ONE

المذيبات

CH2Cl2

ظروف التفاعل

المعالجة

1. 1
   أخرىThe cooled reaction
2. 2
   غسيلwashed with water
3. 3
   استخلاصthe aqueous layer was back-extracted with CH2Cl2 (1×)
4. 4
   تجفيفdried (MgSO4)
5. 5
   ترشيحfiltered
6. 6
   تركيزconcentrated in vacuo

الإجراء التجريبي

1-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydropyridin-2(1H)-one (0.365 g, 1.539 mmol), (1H-benzo[d]imidazol-2-yl)(4-(3-chloropyrazin-2-yloxy)phenyl)methanone (0.540 g, 1.539 mmol), bis(di-tert-butyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II) (0.076 g, 0.108 mmol), potassium acetate (0.453 g, 4.62 mmol), and 9:1 dioxane-H2O (7.5 mL) were combined in a sealed tube and heated at 100° C. for 3 h. The cooled reaction was diluted with CH2Cl2 and washed with water; the aqueous layer was back-extracted with CH2Cl2 (1×). The organic extracts were combined, dried (MgSO4), filtered, and concentrated in vacuo. Flash column chromatography (1% to 5% MeOH/CH2Cl2) provided a crude crop of the desired product. Further trituration with MeOH afforded 4-(3-(4-(1H-benzo[d]imidazole-2-carbonyl)phenoxy)pyrazin-2-yl)-1-methyl-5,6-dihydropyridin-2(1H)-one as a yellow amorphous solid. [M+1]=426.8. IC50 (uM) +++++.

المصدر