Sodium hydride → N-(4-bromo-3-methyl-5-isoxazolyl)-2-[3,4-(methylenedioxy)benzyl]-benzo[b]thiophene-3-sulfonamide

HRID 2270622Notes

Reaction equation

HRID 2270622 reaction equation
[Br:1][C:2]1[C:3]([CH3:8])=[N:4][O:5][C:6]=1[NH2:7].[H-].[Na+].[CH2:11]1[O:33][C:32]2[CH:31]=[CH:30][C:15]([CH2:16][C:17]3[S:21][C:20]4[CH:22]=[CH:23][CH:24]=[CH:25][C:19]=4[C:18]=3[S:26](Cl)(=[O:28])=[O:27])=[CH:14][C:13]=2[O:12]1>C1COCC1>[Br:1][C:2]1[C:3]([CH3:8])=[N:4][O:5][C:6]=1[NH:7][S:26]([C:18]1[C:19]2[CH:25]=[CH:24][CH:23]=[CH:22][C:20]=2[S:21][C:17]=1[CH2:16][C:15]1[CH:30]=[CH:31][C:32]2[O:33][CH2:11][O:12][C:13]=2[CH:14]=1)(=[O:28])=[O:27]

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 104875194-Bromo-3-methylisoxazol-5-amineHCID 229983852-[3,4-(Methylenedioxy)benzyl]-benzo[b]thiophene-3-sulfonylchloride

Product 1

HCID 9806237N-(4-bromo-3-methyl-5-isoxazolyl)-2-[3,4-(methylenedioxy)benzyl]-benzo[b]thiophene-3-sulfonamide

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

N-(4-bromo-3-methyl-5-isoxazolyl)-2-[3,4-(methylenedioxy)benzyl]-benzo[b]thiophene-3-sulfonamide was prepared by the method of Example 41 using 4-bromo-3-methyl-5-aminoisoxazole (1.0 mmoles, 0.177 g), NaH (2.5 mmoles, 100 mg), 2-[3,4-(methylenedioxy)benzyl]benzo[b]thiophene-3-sulfonyl chloride (1.1 mmoles, 0.40 g) and THF (7 ml). Flash chromatography (50% ethyl acetate/hexanes) followed by recrystallization from chloroform and hexanes provided 0.23 g (45%) of a tan crystalline solid, m.p. 164-165° C.

Workup

  1. customFlash chromatography (50% ethyl acetate/hexanes) followed by recrystallization from chloroform and hexanes

Sources & evidence

ORD record
ord-cb48fd3f2bec402cbe5ea6b16e09da58
Source dataset
uspto-grants-2001_12
Patent number
US06331637B1

Reaction notes

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