Potassium trimethylsilanolate → HCID 89705439, compound

HRID 929077Notes

Reaction equation

HRID 929077 reaction equation
[CH2:1]([C:4]1([S:7]([N:10]2[C:14]3=[CH:15][C:16]4[S:20][N:19]=[N:18][C:17]=4[C:21]([F:22])=[C:13]3[N:12]([C:23]3[CH:28]=[CH:27][C:26]([Br:29])=[CH:25][C:24]=3[Cl:30])C2=O)(=[O:9])=[O:8])[CH2:6][CH2:5]1)[CH:2]=[CH2:3].C[Si](C)(C)[O-].[K+]>C1COCC1>[CH2:1]([C:4]1([S:7]([NH:10][C:14]2[C:13]([NH:12][C:23]3[CH:28]=[CH:27][C:26]([Br:29])=[CH:25][C:24]=3[Cl:30])=[C:21]([F:22])[C:17]3[N:18]=[N:19][S:20][C:16]=3[CH:15]=2)(=[O:8])=[O:9])[CH2:5][CH2:6]1)[CH:2]=[CH2:3]

Participants

4

Reactant 2

HCID 23668039Potassium trimethylsilanolateHCID 89705475HCID 89705475, compound

Product 1

HCID 89705439HCID 89705439, compoundYield 96.6%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 7-((1-allylcyclopropyl)sulfonyl)-4-fluoro-5-(2-chloro-4-bromophenyl)-5H-imidazo[4′,5′:4,5]benzo[1,2-d][1,2,3]thiadiazol-6(7H)-one (50 mg, 0.09 mmol) in THF (5 mL) was added potassium trimethylsilanolate (12 mg, 0.09 mmol). The reaction was stirred at room temperature for 1 h and quenched with saturated NH4Cl (aq.). The aqueous layer was extracted with EA (10 mL×2). The combined organic phase was washed with brine (20 mL), dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by flash chromatography on silica gel (petroleum ether/ethyl acetate, 5:1-3:1, v/v) to give the desired product (45 mg, 94.5% yield). 1H NMR (400 MHz, CDCl3): δ 8.26 (s, 1H), 7.65-7.57 (m, 2H), 7.33 (m, 1H), 7.00 (s, 1H), 6.85 (s, 1H), 5.72-5.57 (m, 1H), 5.05 (m, 2H), 2.79-2.72 (m, 1H), 2.12-2.05 (m, 1H), 1.76-1.71 (m, 2H), 1.21-0.98 (m, 2H).

Workup

  1. customquenched with saturated NH4Cl (aq.)
  2. extractionThe aqueous layer was extracted with EA (10 mL×2)
  3. washThe combined organic phase was washed with brine (20 mL)
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by flash chromatography on silica gel (petroleum ether/ethyl acetate, 5:1-3:1

Sources & evidence

ORD record
ord-476e32516b1c47ed916dddeecf337d14
Source dataset
uspto-grants-2016_03
Patent number
US09290468B2

Reaction notes

Loading…