Water → Sodium 4-[4-(5-{3-cyano-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indol-1-yl]butanoate

HRID 423372Notes

Reaction equation

HRID 423372 reaction equation
[C:1]([C:3]1[CH:4]=[C:5]([C:13]2[O:17][N:16]=[C:15]([C:18]3[CH:26]=[CH:25][CH:24]=[C:23]4[C:19]=3[CH:20]=[CH:21][N:22]4[CH2:27][CH2:28][CH2:29][C:30]([O:32]CC)=[O:31])[N:14]=2)[CH:6]=[CH:7][C:8]=1[O:9][CH:10]([CH3:12])[CH3:11])#[N:2].[OH-].[Na+:36].O>O1CCOCC1.C(O)C>[C:1]([C:3]1[CH:4]=[C:5]([C:13]2[O:17][N:16]=[C:15]([C:18]3[CH:26]=[CH:25][CH:24]=[C:23]4[C:19]=3[CH:20]=[CH:21][N:22]4[CH2:27][CH2:28][CH2:29][C:30]([O-:32])=[O:31])[N:14]=2)[CH:6]=[CH:7][C:8]=1[O:9][CH:10]([CH3:12])[CH3:11])#[N:2].[Na+:36]

Participants

6

Reactant 3

HCID 962WaterHCID 14798Sodium HydroxideHCID 59318367Ethyl 4-[4-(5-{3-cyano-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indol-1-yl]butanoate

Product 1

HCID 66676873Sodium 4-[4-(5-{3-cyano-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indol-1-yl]butanoateYield 41.5%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 312751,4-DioxaneSolvent

Procedure

To a solution of ethyl 4-[4-(5-{3-cyano-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indol-1-yl]butanoate (D65) (1.42 g, 3.09 mmol) in a mixture of dioxan (70 ml) and ethanol (70 ml) was treated with 2N sodium hydroxide (1.86 ml, 3.71 mmol) followed by water (35 ml). The solution was stirred at RT for 4 hours. Evaporated off most of the solvent and filtered off the white solid from the remaining solvent. Washed the solid with water followed by ether and dried to give 580 mg of the title compound. δH (400 MHz, methanol-d4) 1.45 (6H, d), 2.09-2.22 (4H, m), 4.30 (2H, t), 4.92-4.98 (1H, m), 7.15 (1H, d), 7.31 (1H, t), 7.38-7.43 (2H, m), 7.69 (1H, d), 7.95 (1H, d), 8.43-8.46 (2H, m). MS (ES) C24H22N4O4 requires 430; found 431 (MH+).

Workup

  1. customEvaporated off most of the solvent
  2. filtrationfiltered off the white solid from the remaining solvent
  3. washWashed the solid with water
  4. customdried

Sources & evidence

ORD record
ord-3b9facb3cdd746a79e9beff98c47efb7
Source dataset
uspto-grants-2012_01
Patent number
US08101775B2

Reaction notes

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