Sodium Bicarbonate → 6-[3-(tert-Butyldimethylsilanyloxymethyl)phenyl]-2-(2,4-difluorophenyl)-3-methylimidazo[1,2-a]pyridine

HRID 1891238Notes

Reaction equation

[Si:1]([O:8][CH2:9][C:10]1[CH:11]=[C:12]([C:16]2[CH:17]=[CH:18][C:19]([NH2:22])=[N:20][CH:21]=2)[CH:13]=[CH:14][CH:15]=1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].C(=O)([O-])O.[Na+].Br[CH:29]([CH3:40])[C:30]([C:32]1[CH:37]=[CH:36][C:35]([F:38])=[CH:34][C:33]=1[F:39])=O>C(O)C>[Si:1]([O:8][CH2:9][C:10]1[CH:11]=[C:12]([C:16]2[CH:17]=[CH:18][C:19]3[N:20]([C:29]([CH3:40])=[C:30]([C:32]4[CH:37]=[CH:36][C:35]([F:38])=[CH:34][C:33]=4[F:39])[N:22]=3)[CH:21]=2)[CH:13]=[CH:14][CH:15]=1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2]

Participants

Conditions

Temperature: 80 °C

Procedure

300 mg of 5-[3-(tert-butyldimethylsilanyloxymethyl)phenyl]pyridin-2-ylamine dissolved in 5 ml of ethanol are placed in a screw reactor. 200 mg of sodium hydrogen carbonate and 470 mg of 2-bromo-1-(2,4-difluorophenyl)propan-1-one are added thereto. The reactor is closed and heated at 80° C. for 20 h. After cooling, the reaction mixture is concentrated under reduced pressure. The residue obtained is purified by silica gel chromatography, elution being carried out with a heptane/ethyl acetate mixture. 220 mg of compound are obtained.

Workup

customare placed in a screw reactor
customThe reactor is closed
temperatureAfter cooling
concentrationthe reaction mixture is concentrated under reduced pressure
customThe residue obtained
customis purified by silica gel chromatography, elution

Sources & evidence

ORD record: ord-4fec0477d0454ff7882f382327028793
Source dataset: uspto-grants-2013_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08507520B2

Reaction notes

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