N-Iodosuccinimide → 5-(2,4-bis(benzyloxy)-5-isopropylphenyl)-N-ethyl-4-iodoisoxazole-3-carboxamide

HRID 646506Notes

Reaction equation

HRID 646506 reaction equation
[CH2:1]([NH:3][C:4]([C:6]1[CH:10]=[C:9]([C:11]2[CH:16]=[C:15]([CH:17]([CH3:19])[CH3:18])[C:14]([O:20][CH2:21][C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=3)=[CH:13][C:12]=2[O:28][CH2:29][C:30]2[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=2)[O:8][N:7]=1)=[O:5])[CH3:2].[I:36]N1C(=O)CCC1=O>C(#N)C>[CH2:1]([NH:3][C:4]([C:6]1[C:10]([I:36])=[C:9]([C:11]2[CH:16]=[C:15]([CH:17]([CH3:19])[CH3:18])[C:14]([O:20][CH2:21][C:22]3[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=3)=[CH:13][C:12]=2[O:28][CH2:29][C:30]2[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=2)[O:8][N:7]=1)=[O:5])[CH3:2]

Participants

4

Reactant 2

HCID 120273N-IodosuccinimideHCID 247734525-(2,4-bis(benzyloxy)-5-isopropylphenyl)-N-ethylisoxazole-3-carboxamide

Product 1

HCID 247739595-(2,4-bis(benzyloxy)-5-isopropylphenyl)-N-ethyl-4-iodoisoxazole-3-carboxamide

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

5-(2,4-Bis-benzyloxy-5-isopropyl-phenyl)-isoxazole-3-carboxylic acid ethylamide (1 eq) was dissolved in an. acetonitrile and N-iodosuccinimide (2.0 eq), followed by ceric ammonium nitrate (0.05 eq) were added, and the solution was stirred at room temperature overnight. The reaction mixture was concentrated in vacuo and the resulting gum was partitioned between ethyl acetate and brine. The organic phase was dried over MgSO4, filtered and concentrated in vacuo. The residue was purified by column chromatography, eluting with 9:1 hexane:ethyl acetate, to give 5-(2,4-Bis-benzyloxy-5-isopropyl-phenyl)-4-iodo-isoxazole-3-carboxylic acid ethylamide as an oil.

Workup

  1. additionwere added
  2. concentrationThe reaction mixture was concentrated in vacuo
  3. customthe resulting gum was partitioned between ethyl acetate and brine
  4. dry with materialThe organic phase was dried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by column chromatography
  8. washeluting with 9:1 hexane

Sources & evidence

ORD record
ord-8b31bad28e0c4e819bd7006819afd31a
Source dataset
uspto-grants-2010_04
Patent number
US07705027B2

Reaction notes

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