N-bromobutanimide → N-(4-bromo-3-methyl-5-isoxazolyl)-4-(3-methoxyphenyl)benzenesulfonamide

HRID 1251859Notes

Reaction equation

HRID 1251859 reaction equation
[CH3:1][C:2]1[CH:6]=[C:5]([NH:7][S:8]([C:11]2[CH:16]=[CH:15][C:14]([C:17]3[CH:22]=[CH:21][CH:20]=[C:19]([O:23][CH3:24])[CH:18]=3)=[CH:13][CH:12]=2)(=[O:10])=[O:9])[O:4][N:3]=1.C1C(=O)N([Br:32])C(=O)C1>>[Br:32][C:6]1[C:2]([CH3:1])=[N:3][O:4][C:5]=1[NH:7][S:8]([C:11]1[CH:12]=[CH:13][C:14]([C:17]2[CH:22]=[CH:21][CH:20]=[C:19]([O:23][CH3:24])[CH:18]=2)=[CH:15][CH:16]=1)(=[O:10])=[O:9]

Participants

3

Reactant 2

HCID 67184N-bromobutanimideHCID 15453194N-(3-methyl-5-isoxazolyl)-4-(3-methoxyphenyl)benzenesulfonamide

Product 1

HCID 15453188N-(4-bromo-3-methyl-5-isoxazolyl)-4-(3-methoxyphenyl)benzenesulfonamide

Procedure

N-(4-bromo-3-methyl-5-isoxazolyl)-4-(3-methoxyphenyl)benzenesulfonamide was prepared in the same manner as described in Example 207 using N-(3-methyl-5-isoxazolyl)-4-(3-methoxyphenyl)benzenesulfonamide and NBS (reaction time 30 min at room temperature). The crude product was purified by column chromatography on silica gel using ethyl acetate as eluent giving the final product, after recrystallization using hexane/ethyl acetate, in 75% yield, m.p. 140-144° C.

Workup

  1. customN-(4-bromo-3-methyl-5-isoxazolyl)-4-(3-methoxyphenyl)benzenesulfonamide was prepared in the same manner
  2. customThe crude product was purified by column chromatography on silica gel

Sources & evidence

ORD record
ord-b10679ef72c54fe6b67479478fe08b2b
Source dataset
uspto-grants-2002_01
Patent number
US06342610B2

Reaction notes

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