Potassium Phosphate, Tribasic → 2-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-10-methyl-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine

HRID 1498541Notes

Reaction equation

HRID 1498541 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]2[O:11][CH2:10][CH2:9][N:8]3[CH:12]=[C:13]([C:15]4[N:19]([CH:20]([CH3:22])[CH3:21])[N:18]=[C:17]([CH3:23])[N:16]=4)[N:14]=[C:7]3[C:6]=2[CH:24]=1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].[CH3:33]B1OB(C)OB(C)O1>C1COCC1.CCOC(C)=O>[CH:20]([N:19]1[C:15]([C:13]2[N:14]=[C:7]3[C:6]4[CH:24]=[C:2]([CH3:33])[CH:3]=[CH:4][C:5]=4[O:11][CH2:10][CH2:9][N:8]3[CH:12]=2)=[N:16][C:17]([CH3:23])=[N:18]1)([CH3:22])[CH3:21]

Participants

6

Reactant 3

HCID 62657Potassium Phosphate, TribasicHCID 574072TrimethylboroxineHCID 5820476010-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 582046882-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-10-methyl-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
140 °C

Procedure

A microwave vial was charged with a suspension of 10-bromo-2-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine (0.200 mg, 0.515 mmol) in 2.0 ml THF/0.400 mL water. To this suspension was added potassium phosphate (330 mg, 0.0015 mol) and trimethylboroxine (0.14 ml, 1.00 mmol). The reaction suspension was degassed by bubbling nitrogen through the stirred mixture via a syringe. After several minutes the syringe was removed and Bis(ditertbutyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II) (18 mg, 0.02 mmol) was added and the reaction vial was quickly sealed. The sealed vial was flash heated in a microwave at 140° C. for 40 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 481. MS: (ESI+)=324.1

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-597120fdbd76494bbff6cc13d5175e95
Source dataset
uspto-grants-2015_12
Patent number
US09198918B2

Reaction notes

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