Citric Acid → 2-(4-(2-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepin-9-yl)-1H-pyrazol-1-yl)-2-methylpropanoic acid

HRID 1629288Notes

Reaction equation

HRID 1629288 reaction equation
[CH:1]([N:4]1[C:8]([C:9]2[N:10]=[C:11]3[C:17]4[CH:18]=[CH:19][C:20]([C:22]5[CH:23]=[N:24][N:25]([C:27]([CH3:34])([CH3:33])[C:28]([O:30]CC)=[O:29])[CH:26]=5)=[CH:21][C:16]=4[O:15][CH2:14][CH2:13][N:12]3[CH:35]=2)=[N:7][C:6]([CH3:36])=[N:5]1)([CH3:3])[CH3:2].[Li+].[OH-].O.C(O)(=O)CC(CC(O)=O)(C(O)=O)O>CO>[CH:1]([N:4]1[C:8]([C:9]2[N:10]=[C:11]3[C:17]4[CH:18]=[CH:19][C:20]([C:22]5[CH:23]=[N:24][N:25]([C:27]([CH3:34])([CH3:33])[C:28]([OH:30])=[O:29])[CH:26]=5)=[CH:21][C:16]=4[O:15][CH2:14][CH2:13][N:12]3[CH:35]=2)=[N:7][C:6]([CH3:36])=[N:5]1)([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 311Citric AcidHCID 168937Lithium hydroxide, monohydrateHCID 58204648ethyl 2-(4-(2-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepin-9-yl)-1H-pyrazol-1-yl)-2-methylpropanoate

Product 1

HCID 582043942-(4-(2-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepin-9-yl)-1H-pyrazol-1-yl)-2-methylpropanoic acid

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

Ethyl 2-(4-(2-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepin-9-yl)-1H-pyrazol-1-yl)-2-methylpropanoate (750 mg, 0.0015 mol) was treated with 1 M of LiOH/H2O (1.6 mL) in MeOH (10 mL). The reaction was allowed to stirred at room temperature for 2 hours. The mixture was acidified by 10% citric acid aqueous solution was until PH=5, extracted with EtOAc twice, dried with MgSO4, and concentrated in vacuo. The crude was purified by Prep HPLC to provide 251. LC/MS (ESI+): m/z 462 (M+H). 1H NMR (500 MHz, DMSO) δ 8.44 (s, 1H), 8.36 (d, J=8.4, 1H), 7.97 (s, 1H), 7.86 (s, 1H), 7.44 (dd, J=8.4, 1.7, 1H), 7.35 (d, J=1.7, 1H), 5.82 (dt, J=13.1, 6.6, 1H), 4.52 (s, 3H), 2.25 (s, 2H), 1.78 (s, 4H), 1.45 (t, J=13.9, 4H)

Workup

  1. extractionextracted with EtOAc twice
  2. dry with materialdried with MgSO4
  3. concentrationconcentrated in vacuo
  4. customThe crude was purified by Prep HPLC

Sources & evidence

ORD record
ord-967b7da82925437f858205af02947e1f
Source dataset
uspto-grants-2014_07
Patent number
US08785626B2

Reaction notes

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