Water → HCID 68156707, compound

HRID 1892740Notes

Reaction equation

HRID 1892740 reaction equation
[CH3:1][C:2]1[CH:3]=[C:4]([CH:21]=[C:22]([CH3:33])[C:23]=1[N:24]1[CH:28]=[C:27]([C:29]([F:32])([F:31])[F:30])[CH:26]=[N:25]1)[O:5][C@H:6]([C:10]1[CH:20]=[CH:19][C:13]([C:14]([O:16]CC)=[O:15])=[CH:12][CH:11]=1)[CH2:7][CH2:8][CH3:9].O.O1CCCC1.O.[OH-].[Li+]>CO>[CH3:1][C:2]1[CH:3]=[C:4]([CH:21]=[C:22]([CH3:33])[C:23]=1[N:24]1[CH:28]=[C:27]([C:29]([F:30])([F:32])[F:31])[CH:26]=[N:25]1)[O:5][C@H:6]([C:10]1[CH:11]=[CH:12][C:13]([C:14]([OH:16])=[O:15])=[CH:19][CH:20]=1)[CH2:7][CH2:8][CH3:9]

Participants

6

Reactant 4

HCID 962WaterHCID 8028TetrahydrofuranHCID 168937Lithium hydroxide, monohydrate2×HCID 68178608HCID 68178608, compound

Product 1

HCID 68156707HCID 68156707, compoundYield 100.3%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a flask containing (S)-ethyl 4-(1-(3,5-dimethyl-4-(4-(trifluoromethyl)-1H-pyrazol-1-yl)phenoxy)butyl)benzoate (11.8 g, 25.6 mmol) was added water (32.0 mL), tetrahydrofuran (32.0 mL), and methanol (32.0 mL). Lithium hydroxide monohydrate (2.15 g, 51.2 mmol) was then added. The suspension was stirred at room temperature. After 1.5 h, another (1.07 g, 25.6 mmol) of lithium hydroxide monohydrate was added. After 2 h, the reaction was concentrated. The crude residue was dissolved in water and the solution was acidified to pH=3 with 1N hydrochloric acid. A white precipitate formed. The solid was filtered, rinsed with water, and dried under vacuum to give (S)-4-(1-(3,5-dimethyl-4-(4-(trifluoromethyl)-1H-pyrazol-1-yl)phenoxy)butyl)benzoic acid (11.1 g, 100%) as a white gum. 1H NMR (400 MHz, CDCl3, δ): 8.07 (d, J=8.4 Hz, 2H), 7.88 (s, 1H), 7.65 (s, 1H), 7.45 (d, J=8.2 Hz, 2H), 6.58 (s, 2H), 5.18 (dd, J=8.0, 4.9 Hz, 1H), 2.04-1.92 (m, 1H), 1.89 (s, 6H), 1.87-1.75 (m, 1H), 1.61-1.36 (m, 2H), 0.97 (t, J=7.4 Hz, 3H). MS (M+1): 433.

Workup

  1. waitAfter 2 h
  2. concentrationthe reaction was concentrated
  3. dissolutionThe crude residue was dissolved in water
  4. customA white precipitate formed
  5. filtrationThe solid was filtered
  6. washrinsed with water
  7. customdried under vacuum

Sources & evidence

ORD record
ord-536d74849e0f4c3a97ea51054e7fcb3e
Source dataset
uspto-grants-2013_08
Patent number
US08507533B2

Reaction notes

Loading…