Potassium Acetate → HCID 58204339, compound

HRID 1498490Notes

Reaction equation

HRID 1498490 reaction equation
Br[C:2]1[CH:24]=[CH:23][C:5]2[C:6]3[N:7]([CH:11]=[C:12]([C:14]4[N:18]([CH:19]([CH3:21])[CH3:20])[N:17]=[C:16]([CH3:22])[N:15]=4)[N:13]=3)[CH2:8][CH2:9][O:10][C:4]=2[CH:3]=1.C([O-])(=O)C.[K+].[CH3:30][N:31]1[CH:35]=[CH:34][C:33](B2OC(C)(C)C(C)(C)O2)=[N:32]1>C(#N)C.CCOC(C)=O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH:19]([N:18]1[C:14]([C:12]2[N:13]=[C:6]3[C:5]4[CH:23]=[CH:24][C:2]([C:34]5[CH:33]=[N:32][N:31]([CH3:30])[CH:35]=5)=[CH:3][C:4]=4[O:10][CH2:9][CH2:8][N:7]3[CH:11]=2)=[N:15][C:16]([CH3:22])=[N:17]1)([CH3:21])[CH3:20]

Participants

7

Reactant 3

HCID 517044Potassium AcetateHCID 27600771-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazoleHCID 582043229-Bromo-2-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine

Product 1

HCID 58204339HCID 58204339, compoundYield 55%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 6342AcetonitrileSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
150 °C

Procedure

A microwave vial was charged with a suspension of 9-bromo-2-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine 411 (0.239 mg, 0.617 mmol) in 3.0 ml ACN/1.0 mL water. To this suspension was added potassium acetate (182 mg, 1.85 mmol) and 1-methylpyrazole boronic acid pinacol ester (154 mg, 740 mmol). The reaction suspension was degassed by bubbling nitrogen through the stirred mixture via a syringe. After several minutes the syringe was removed and tetrakis(triphenylphosphine)palladium(0) (57 mg, 56 mmol) was added and the reaction vial was quickly sealed. The sealed vial was flash heated in a microwave at 150° C. for 30 minutes. The cooled reaction was diluted with EtOAc and the organic solution was washed with water ×1, saline ×1 and dried (Na2SO4) before concentration in vacuo. The crude residue was purified by preparative RP-HPLC to give 132 mg of 423 (55% theoretical yield). 1H NMR (400 MHz, DMSO) δ 8.36 (d, J=8.4 Hz, 1H), 8.20 (s, 1H), 7.90 (d, J=23.3 Hz, 2H), 7.36 (dd, J=8.4, 1.6 Hz, 1H), 7.25 (d, J=1.6 Hz, 1H), 5.83 (dt, J=13.3, 6.6 Hz, 1H), 4.51 (s, 4H), 3.87 (s, 3H), 2.25 (s, 3H), 1.47 (d, J=6.6 Hz, 6H)

Workup

  1. customThe reaction suspension was degassed
  2. customby bubbling nitrogen through the stirred mixture via a syringe
  3. customAfter several minutes the syringe was removed
  4. customthe reaction vial was quickly sealed
  5. customThe cooled reaction
  6. washthe organic solution was washed with water ×1, saline ×1
  7. dry with materialdried (Na2SO4)
  8. concentrationbefore concentration in vacuo
  9. customThe crude residue was purified by preparative RP-HPLC

Sources & evidence

ORD record
ord-d403ad5f3014460aa825359f3e9bf943
Source dataset
uspto-grants-2015_12
Patent number
US09198918B2

Reaction notes

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