Reaction #680099

Reaction equation

224c

(S)-6-Chloro-2-methyl-4-(5-(2-methyl-4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)pyridazin-3(2H)-one

{3-[(acetoxy)methyl]-2-{4,4-dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl}pyridin-4-yl}boronic acid

{3-[(Acetyloxy)methyl]-2-{4,4-dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl}pyridin-4-yl}boronic Acid

sodium acetate

K3PO4

→

224d

Yield 51.0%

(2-{4,4-Dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl}-4-[1-methyl-5-({5-[(2S)-2-methyl-4-(oxetan-3-yl)piperazin-1-yl]pyridin-2-yl}amino)-6-oxo-1,6-dihydropyridazin-3-yl]pyridin-3-yl)methyl Acetate

Yield 51.0%

Solvents

acetonitrile water

Conditions

Workup

1. 1
   OtherA sealed tube equipped with a magnetic stirrer
2. 2
   OtherAfter three cycles of vacuum/argon flush
3. 3
   TemperatureIt was then cooled to room temperature
4. 4
   Filtrationfiltered
5. 5
   OtherThe filtrate was evaporated under reduced pressure
6. 6
   Otherthe residue was purified by silica-gel column chromatography
7. 7
   Washeluting with 25:1 dichloromethane/methanol

Procedure

A sealed tube equipped with a magnetic stirrer was charged with 224c (200 mg, 0.50 mmol), {3-[(acetoxy)methyl]-2-{4,4-dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl}pyridin-4-yl}boronic acid 199e (240 mg, 0.60 mmol), Pd(dppf)Cl2 (18 mg, 0.025 mmol), sodium acetate (74 mg, 0.90 mmol), K3PO4 (191 mg, 0.90 mmol), and acetonitrile/water (6:1, 3.5 mL). After three cycles of vacuum/argon flush, the mixture was heated at 100° C. for 1 h. It was then cooled to room temperature and filtered. The filtrate was evaporated under reduced pressure and the residue was purified by silica-gel column chromatography eluting with 25:1 dichloromethane/methanol to afford 224d (180 mg, 51%) as a brown solid. MS-ESI: [M+H]+ 708.3.

Source