Sodium hydride → [(1S,4S)-4-(2-Chloro-pyridin-4-yloxy)-1,2,3,4-tetrahydro-naphthalen-1-yl]-carbamic acid tert-butyl ester

HRID 630706Notes

Reaction equation

HRID 630706 reaction equation
[H-].[Na+].[C:3]([O:7][C:8](=[O:21])[NH:9][C@@H:10]1[C:19]2[C:14](=[CH:15][CH:16]=[CH:17][CH:18]=2)[C@@H:13]([OH:20])[CH2:12][CH2:11]1)([CH3:6])([CH3:5])[CH3:4].[Cl:22][C:23]1[CH:28]=[C:27]([N+]([O-])=O)[CH:26]=[CH:25][N:24]=1>CN(C=O)C.O>[C:3]([O:7][C:8](=[O:21])[NH:9][C@@H:10]1[C:19]2[C:14](=[CH:15][CH:16]=[CH:17][CH:18]=2)[C@@H:13]([O:20][C:27]2[CH:26]=[CH:25][N:24]=[C:23]([Cl:22])[CH:28]=2)[CH2:12][CH2:11]1)([CH3:6])([CH3:4])[CH3:5]

Participants

6

Reactant 3

HCID 24758Sodium hydrideHCID 7351522-Chloro-4-nitropyridineHCID 86686963((1S,4S)-4-Hydroxy-1,2,3,4-tetrahydro-naphthalen-1-yl)-carbamic acid tert-butyl ester

Product 1

HCID 86686964[(1S,4S)-4-(2-Chloro-pyridin-4-yloxy)-1,2,3,4-tetrahydro-naphthalen-1-yl]-carbamic acid tert-butyl esterYield 95.4%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

Sodium hydride (60% in mineral oil, 0.32 g, 8.00 mmol) was suspended in dry DMF (15 mL) under argon. To this was added Intermediate 10a (1.05 g, 4.00 mmol) followed by 2-chloro-4-nitropyridine (0.64 g, 4.02 mmol). The dark coloured mixture was stirred at RT under argon for 30 min. The reaction mixture was diluted with water and extracted with DCM (3×30 mL). The combined organic layers were washed with brine, dried (Na2SO4), filtered, concentrated in vacuo. Purification by FCC, eluting with 0-70% ethyl acetate in cyclohexane, gave the title compound as a white foam (1.43 g, 95%). LCMS (Method 3): Rt 4.22 min, m/z 373.1 [MH−].

Workup

  1. extractionextracted with DCM (3×30 mL)
  2. washThe combined organic layers were washed with brine
  3. dry with materialdried (Na2SO4)
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customPurification by FCC
  7. washeluting with 0-70% ethyl acetate in cyclohexane

Sources & evidence

ORD record
ord-a4dc367e2db94d469632aed4ee3d1ffe
Source dataset
uspto-grants-2016_04
Patent number
US09315503B2

Reaction notes

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