Sodium Hydroxide → HCID 86657805, compound

HRID 1971965Notes

Reaction equation

HRID 1971965 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C@@H:11]([O:14]C(=O)C2C=CC([N+]([O-])=O)=CC=2)[C@H:10]([CH2:26][O:27][C:28]2[N:29]=[N:30][C:31]([CH2:47][CH2:48][CH2:49][CH3:50])=[C:32]([C:34]3[CH:39]=[CH:38][C:37]([O:40][CH:41]4[CH2:46][CH2:45][CH2:44][CH2:43][CH2:42]4)=[CH:36][CH:35]=3)[CH:33]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[OH-].[Na+]>CO.O>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][C@@H:11]([OH:14])[C@H:10]([CH2:26][O:27][C:28]2[N:29]=[N:30][C:31]([CH2:47][CH2:48][CH2:49][CH3:50])=[C:32]([C:34]3[CH:35]=[CH:36][C:37]([O:40][CH:41]4[CH2:46][CH2:45][CH2:44][CH2:43][CH2:42]4)=[CH:38][CH:39]=3)[CH:33]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 2

HCID 14798Sodium HydroxideHCID 86657804HCID 86657804, compound

Product 1

HCID 86657805HCID 86657805, compoundYield 80.1%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Procedure

To a stirred solution of (±)-trans-3-[6-butyl-5-(4-cyclohexyloxy-phenyl)-pyridazin-3-yloxymethyl]-4-(4-nitro-benzoyloxy)-piperidine-1-carboxylic acid tert-butyl ester (0.914 mmol, 0.63 g) in a mixture of methanol (8 mL) and water (2 mL) was added sodium hydroxide (0.3 g) and continued stirring for 3 h at room temperature. The volatiles were removed under reduced pressure and the residue was dissolved in water (20 mL). This was extracted with ethyl acetate (3×15 mL), combined organic layer was dried, filtered and concentrated. The residue was purified by flash silica gel column chromatography by eluting with 20% ethyl acetate in hexanes to provide (±)-trans-3-[6-butyl-5-(4-cyclohexyloxy-phenyl)-pyridazin-3-yloxymethyl]-4-hydroxy-piperidine-1-carboxylic acid tert-butyl ester (0.395 g) as an white solid.

Workup

  1. customThe volatiles were removed under reduced pressure
  2. dissolutionthe residue was dissolved in water (20 mL)
  3. extractionThis was extracted with ethyl acetate (3×15 mL)
  4. customwas dried
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was purified by flash silica gel column chromatography
  8. washby eluting with 20% ethyl acetate in hexanes

Sources & evidence

ORD record
ord-8961acacf19046b3ace9766f53188d7a
Source dataset
uspto-grants-2013_04
Patent number
US08431575B2

Reaction notes

Loading…