1-Bromo-2-methylpropane → 4-{[(3,5-dimethyl-4-isoxazolyl)methyl]oxy}-N-(3,5-dimethyl-2-pyridinyl)-N-(2-methylpropyl)benzenesulfonamide

HRID 594150Notes

Reaction equation

HRID 594150 reaction equation
[CH3:1][C:2]1[C:6]([CH2:7][O:8][C:9]2[CH:14]=[CH:13][C:12]([S:15]([NH:18][C:19]3[C:24]([CH3:25])=[CH:23][C:22]([CH3:26])=[CH:21][N:20]=3)(=[O:17])=[O:16])=[CH:11][CH:10]=2)=[C:5]([CH3:27])[O:4][N:3]=1.[CH3:28][C:29](N=C(N(C)C)N(C)C)([CH3:31])[CH3:30].BrCC(C)C>C(#N)C>[CH3:1][C:2]1[C:6]([CH2:7][O:8][C:9]2[CH:14]=[CH:13][C:12]([S:15]([N:18]([C:19]3[C:24]([CH3:25])=[CH:23][C:22]([CH3:26])=[CH:21][N:20]=3)[CH2:28][CH:29]([CH3:31])[CH3:30])(=[O:17])=[O:16])=[CH:11][CH:10]=2)=[C:5]([CH3:27])[O:4][N:3]=1

Participants

5

Reactant 3

HCID 65551-Bromo-2-methylpropaneHCID 35715812-tert-Butyl-1,1,3,3-tetramethylguanidineHCID 898763854-{[(3,5-dimethyl-4-isoxazolyl)methyl]oxy}-N-(3,5-dimethyl-2-pyridinyl)benzenesulfonamide

Product 1

HCID 721941374-{[(3,5-dimethyl-4-isoxazolyl)methyl]oxy}-N-(3,5-dimethyl-2-pyridinyl)-N-(2-methylpropyl)benzenesulfonamideYield 46.6%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To a solution of 4-{[(3,5-dimethyl-4-isoxazolyl)methyl]oxy}-N-(3,5-dimethyl-2-pyridinyl)benzenesulfonamide (56 mg, 0.145 mmol) in acetonitrile (1 mL) was added N″-(1,1-dimethylethyl)-N,N,N′,N′-tetramethylguanidine (25 mg, 0.145 mmol) and the mixture was stirred at room temperature for 1 hour, 1-bromo-2-methylpropane (0.031 mL, 0.289 mmol) was then added and the mixture was stirred at 70° C. for 125 hours. The mixture was concentrated in vacuo and partitioned between dichloromethane (5 mL) and water (5 mL). The organic layer was then purified by mass directed autoprep (formic acid modifier) to give the title compound (30 mg) as a white solid. LCMS (2 min, formic) Rt 1.31 min, m/z (ES+) 444 (M+H).

Workup

  1. stirringthe mixture was stirred at 70° C. for 125 hours
  2. concentrationThe mixture was concentrated in vacuo
  3. custompartitioned between dichloromethane (5 mL) and water (5 mL)
  4. customThe organic layer was then purified by mass

Sources & evidence

ORD record
ord-c2bc17e51b0d4e6f8d5cbd9ffc9d4aa7
Source dataset
uspto-grants-2016_01
Patent number
US09242972B2

Reaction notes

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