Methyl iodide → Sodium (4r)-4-methyl-4-(3-methylbutyl)-2-{7-[methyl(methylsulfonyl)amino]-1,1-dioxido-4h-1,2,4-benzothiadiazin-3-yl}-3-oxo-3,4-dihydronaphthalen-1-olate

HRID 494584Notes

Reaction equation

HRID 494584 reaction equation
[OH:1][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[C@@:5]([CH3:17])([CH2:12][CH2:13][CH:14]([CH3:16])[CH3:15])[C:4](=[O:18])[C:3]=1[C:19]1[NH:24][C:23]2[CH:25]=[CH:26][C:27]([NH:29][S:30]([CH3:33])(=[O:32])=[O:31])=[CH:28][C:22]=2[S:21](=[O:35])(=[O:34])[N:20]=1.[OH-].[Na+:37].[CH3:38]I>O.CN(C)C=O>[CH3:17][C@@:5]1([CH2:12][CH2:13][CH:14]([CH3:16])[CH3:15])[C:6]2[C:11](=[CH:10][CH:9]=[CH:8][CH:7]=2)[C:2]([O-:1])=[C:3]([C:19]2[NH:24][C:23]3[CH:25]=[CH:26][C:27]([N:29]([CH3:38])[S:30]([CH3:33])(=[O:32])=[O:31])=[CH:28][C:22]=3[S:21](=[O:35])(=[O:34])[N:20]=2)[C:4]1=[O:18].[Na+:37]

Participants

6

Reactant 3

HCID 6328Methyl iodideHCID 14798Sodium HydroxideHCID 135436761A-837093

Product 1

HCID 131727452Sodium (4r)-4-methyl-4-(3-methylbutyl)-2-{7-[methyl(methylsulfonyl)amino]-1,1-dioxido-4h-1,2,4-benzothiadiazin-3-yl}-3-oxo-3,4-dihydronaphthalen-1-olate

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of Example 39I (104 mg, 0.193 mmol) in 3 mL of water was added 0.997 N NaOH (0.194 mL, 0.193 mmol). After stirring for 2 hours, the reaction mixture was concentrated to dryness. To a solution of the resulting residue in 3 mL of dimethylformamide was added methyl iodide (0.012 mL, 0.193 mmol). After stirring at room temperature overnight, the reaction solution was concentrated and chromatographed on silica gel eluting with hexane followed by 60% and 80% ethyl acetate in hexane. The resulting yellow solid was suspended in 3 mL of water and 0.997 N NaOH was added (0.160 mL, 0.160 mmol). After stirring for 4 hours, the suspension was lyophilized to 84 mg (79%) of a yellow solid. 1H NMR (300 MHz, DMSO-d6): δ ppm 0.46 (m, 1H) 0.69 (t, J=7.17 Hz, 6H) 0.82 (m, 1H) 1.28 (m, 1H) 1.39 (s, 3H) 1.73 (m, 1H) 2.15 (m, 1H) 2.97 (s, 3H) 3.27 (s, 3H) 7.33 (m, 2H) 7.46 (m, 2H) 7.57 (dd, J=8.82, 2.21 Hz, 1H) 7.66 (d, J=2.57 Hz, 1H) 8.05 (d, J=7.72 Hz, 1H) 15.64 (s, 1H). MS (ESI−) m/z 530 (M−H)−.

Workup

  1. concentrationthe reaction mixture was concentrated to dryness
  2. stirringAfter stirring at room temperature overnight
  3. concentrationthe reaction solution was concentrated
  4. customchromatographed on silica gel eluting with hexane
  5. addition0.997 N NaOH was added (0.160 mL, 0.160 mmol)
  6. stirringAfter stirring for 4 hours

Sources & evidence

ORD record
ord-383e2b580dc0404bb88ebdebf36e9587
Source dataset
uspto-grants-2009_05
Patent number
US07538105B2

Reaction notes

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