Benzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1) → N-[2-(2-Phenyl-7,8-dihydro-6H-indeno[5,4-d][1,3]oxazol-8-yl)ethyl]acetamide

HRID 1661425Notes

Reaction equation

HRID 1661425 reaction equation
[C:1]([NH:4][CH2:5][CH2:6][CH:7]1[C:15]2[C:10](=[CH:11][CH:12]=[C:13]([NH:17][C:18](=[O:25])[C:19]3[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=3)[C:14]=2O)[CH2:9][CH2:8]1)(=[O:3])[CH3:2].C1(C)C=CC(S([O-])(=O)=O)=CC=1.[NH+]1C=CC=CC=1>C1(C)C(C)=CC=CC=1>[C:19]1([C:18]2[O:25][C:14]3[C:15]4[CH:7]([CH2:6][CH2:5][NH:4][C:1](=[O:3])[CH3:2])[CH2:8][CH2:9][C:10]=4[CH:11]=[CH:12][C:13]=3[N:17]=2)[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1

Participants

4

Reactant 2

HCID 466102Benzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1)HCID 57781276N-{3-[2-(Acetylamino)ethyl]-4-hydroxy-2,3-dihydro-1H-inden-5-yl}benzamide

Product 1

HCID 57781208N-[2-(2-Phenyl-7,8-dihydro-6H-indeno[5,4-d][1,3]oxazol-8-yl)ethyl]acetamideYield 82%

Reagents, catalysts & solvents 1

HCID 7237O-XyleneSolvent

Procedure

N-{3-[2-(Acetylamino)ethyl]-4-hydroxy-2,3-dihydro-1H-inden-5-yl}benzamide (100 mg, 0.257 mmol) and pyridinium p-toluenesulfonate (12.9 mg, 0.0513 mmol) were heated under reflux in xylene (5 mL) for 2.5 hr. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (NH, ethyl acetate/hexane=30/70→60/40) and recrystallized (ethyl acetate/diisopropyl ether) to give the title compound (67.5 mg, yield 82%).

Workup

  1. customThe solvent was evaporated under reduced pressure
  2. customthe residue was purified by silica gel column chromatography (NH, ethyl acetate/hexane=30/70→60/40)
  3. customrecrystallized (ethyl acetate/diisopropyl ether)

Sources & evidence

ORD record
ord-d4761ecca1ae4710bc4ce3b4a99c1487
Source dataset
uspto-grants-2011_10
Patent number
US08030337B2

Reaction notes

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