p-Toluenesulfonic acid → HCID 9946388, compound

HRID 842205Notes

Reaction equation

HRID 842205 reaction equation
[N+:1]([C:4]1[CH:10]=[CH:9][CH:8]=[CH:7][C:5]=1[NH2:6])([O-:3])=[O:2].[CH2:11]([O:13][C:14](=[O:28])[CH:15]([CH2:19][C:20](=O)[C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1)[C:16](=O)[CH3:17])[CH3:12].CC1C=CC(S(O)(=O)=O)=CC=1>C(O)C>[CH2:11]([O:13][C:14]([C:15]1[CH:19]=[C:20]([C:21]2[CH:22]=[CH:23][CH:24]=[CH:25][CH:26]=2)[N:6]([C:5]2[CH:7]=[CH:8][CH:9]=[CH:10][C:4]=2[N+:1]([O-:3])=[O:2])[C:16]=1[CH3:17])=[O:28])[CH3:12]

Participants

5

Reactant 3

HCID 6101p-Toluenesulfonic acidHCID 69462-NitroanilineHCID 312893Ethyl 2-acetyl-4-oxo-4-phenylbutanoate

Product 1

HCID 9946388HCID 9946388, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

o-Nitroaniline (15 mmol, 2.1 g), 3-oxo-2-(2-oxo-2-phenyl-ethyl)-butyric acid ethyl ester (15 mmol, 3.7 g), and tosic acid (0.1 g) were combined in ethanol, then heated under reflux. The resulting oil was purified over three silica gel columns to yield the named product, 1H-NMR (CDCl3, ppm): 1.36 t (3H), 2.36 s (3H), 4.31 q (2H), 6.80 s (1H), 7.03-7.66 bm (6H), 7.68 dt (2H) 7.97 dd (1H)

Workup

  1. temperatureheated
  2. temperatureunder reflux
  3. customThe resulting oil was purified over three silica gel columns
  4. customto yield the named product, 1H-NMR (CDCl3, ppm): 1.36 t (3H), 2.36 s (3H), 4.31 q (2H), 6.80 s (1H), 7.03-7.66 bm (6H), 7.68 dt (2H) 7.97 dd (1H)

Sources & evidence

ORD record
ord-2cb2e305dbb3461e9efdaacd616860e0
Source dataset
uspto-grants-2002_04
Patent number
US06372777B1

Reaction notes

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