2-Amino-4-chlorophenol → HCID 86086750, compound

HRID 1189071Notes

Reaction equation

HRID 1189071 reaction equation
[CH3:1][O:2][C:3](=[NH:8])[CH2:4][CH2:5][C:6]#[CH:7].N[C:10]1[CH:15]=[C:14]([Cl:16])[CH:13]=[CH:12]C=1O>ClC(Cl)C>[CH2:4]([C:3]1[O:2][C:1]2[CH:10]=[CH:15][C:14]([Cl:16])=[CH:13][C:12]=2[N:8]=1)[CH2:5][C:6]#[CH:7]

Participants

4

Reactant 2

HCID 72652-Amino-4-chlorophenolHCID 57691793Methyl pent-4-ynimidate

Product 1

HCID 86086750HCID 86086750, compoundYield 7%

Reagents, catalysts & solvents 1

HCID 63651,1-DichloroethaneSolvent

Procedure

A mixture of pent-4-ynimidic acid methyl ester (142 mg, 1.28 mmol) and 2-amino-4-chlorophenol (227 mg, 1.53 mmol) in dichloroethane (10 mL) was stirred for 2 days under reflux. The solvent was evaporated, the residue was partly dissolved in MeOH and filtered. The filtrate was concentrated, and the resulting crude residue was purified by flash chromatography (cyclohexane/AcOEt 9:1) to yield 18 mg (87 μmol, 7%) of 2-(but-3-ynyl)-5-chlorobenzo[d]oxazole.

Workup

  1. temperatureunder reflux
  2. customThe solvent was evaporated
  3. dissolutionthe residue was partly dissolved in MeOH
  4. filtrationfiltered
  5. concentrationThe filtrate was concentrated
  6. customthe resulting crude residue was purified by flash chromatography (cyclohexane/AcOEt 9:1)

Sources & evidence

ORD record
ord-275d77ccbccc49b99777bc75c38a400b
Source dataset
uspto-grants-2014_03
Patent number
US08674106B2

Reaction notes

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