Sodium Hydroxide → HCID 44548573, compound

HRID 1512909Notes

Reaction equation

HRID 1512909 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:12]2[O:16][N:15]=[C:14]([C:17]3[CH:18]=[CH:19][CH:20]=[C:21]4[C:25]=3[NH:24][CH:23]=[C:22]4[CH2:26][NH:27][C@H:28]([C:30]([O:32]C)=[O:31])[CH3:29])[N:13]=2)[CH:5]=[CH:6][C:7]=1[O:8][CH:9]([CH3:11])[CH3:10].[OH-].[Na+]>O1CCCC1.CO.O>[Cl:1][C:2]1[CH:3]=[C:4]([C:12]2[O:16][N:15]=[C:14]([C:17]3[CH:18]=[CH:19][CH:20]=[C:21]4[C:25]=3[NH:24][CH:23]=[C:22]4[CH2:26][NH:27][C@H:28]([C:30]([OH:32])=[O:31])[CH3:29])[N:13]=2)[CH:5]=[CH:6][C:7]=1[O:8][CH:9]([CH3:10])[CH3:11]

Participants

6

Reactant 2

HCID 14798Sodium HydroxideHCID 59146180HCID 59146180, compound

Product 1

HCID 44548573HCID 44548573, compoundYield 37.9%

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
20 °C

Procedure

To a solution of methyl N-{[7-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indol-3-yl]methyl}-L-alaninate (D76) (223 mg) in tetrahydrofuran (5 mL) and methanol (5 mL) stirred at 20° C. was added a solution of sodium hydroxide (60 mg) in water (5 mL) in one charge. The reaction mixture was stirred at 20° C. overnight. The reaction mixture was concentrated to about 5 mL and then HCl aquous solution was added dropwise until no further white precipitate was formed. The solid was filtered and washed with EtOAc. The solid was collected and then was suspended in methanol (5 mL) and water (5 mL). The mixture was acidified with HCl (1 M) solution to pH around 1 to form a clear solution. After most of the solvent was evaporated off, the residue was freeze-dried to afford N-{[7-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indol-3-yl]methyl}-L-alanine (E50) (82 mg) as a hydrochloride salt. δH (DMSO-d6, 400 MHz): 1.34 (3H, d), 1.38 (6H, d), 3.33 (1H, m), 4.28 (2H, q), 4.88-4.94 (1H, m), 7.31 (1H, t), 7.47 (1H, d), 7.64 (1H, d), 8.00 (1H, d), 8.05 (1H, d), 8.22 (1H, dd), 8.40 (1H, d), 11.26 (1H, br s). MS (ES): C23H23ClN4O4 requires 454; found 366.1 (M—NHC2H3COOH+).

Workup

  1. additioncharge
  2. concentrationThe reaction mixture was concentrated to about 5 mL
  3. additionHCl aquous solution was added dropwise until no further white precipitate
  4. customwas formed
  5. filtrationThe solid was filtered
  6. washwashed with EtOAc
  7. customThe solid was collected
  8. customto form a clear solution
  9. customAfter most of the solvent was evaporated off
  10. customthe residue was freeze-dried

Sources & evidence

ORD record
ord-6fa3c814c0f141849371d3926ec93e58
Source dataset
uspto-grants-2012_07
Patent number
US08217028B2

Reaction notes

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