Toluene → HCID 58107492, compound
Reaction equation
COC(=O)[CH2:4][CH2:5][NH:6][CH3:7].C1C2[C:12](=CC=CC=2)[CH2:11][C:10]1=[O:18].[C:19]1([CH3:25])[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1>>[CH3:7][N:6]1[C:10](=[O:18])[CH2:11][CH2:12][C:25]2[C:19]3[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=3[CH2:4][C:5]1=2Participants
Procedure
3-Methylamino-propionic acid methyl ester (1.5 g, 13.64 mmol) is added to a solution of 2-indanone (1.7 g, 12.86 mmol) in toluene (20 mL) and the reaction is brought to reflux for 2.5 hours. Toluene is removed in vacuo and the residue is dissolved in ethylene glycol (17 mL) and the resulting solution is heated to reflux for 8 hours. The reaction is allowed to cool to ambient temperature, is poured over water and extracted with dichloromethane. The organic phase is dried over magnesium sulfate and concentrated in vacuo to afford the crude title compound as a brown oil. The crude product is purified by silica gel chromatography (gradient of ethyl acetate in hexanes 10-100%) affording 720 mg (28% yield) of the title compound. 1H NMR (CDCl3) 2.70-2.80 (m, 4H), 3.23 (s, 3H), 3.5 (s, 2H), 7.07-7.15 (m, 2H), 7.24-7.33 (m, 1H), 7.38 (d, 1H, J=7.07). MS (m/z): 199.2 (M+1).
Workup
- temperatureto reflux for 2.5 hours
- customToluene is removed in vacuo
- dissolutionthe residue is dissolved in ethylene glycol (17 mL)
- temperaturethe resulting solution is heated
- temperatureto reflux for 8 hours
- additionis poured over water
- extractionextracted with dichloromethane
- dry with materialThe organic phase is dried over magnesium sulfate
- concentrationconcentrated in vacuo
- customto afford the crude title compound as a brown oil
- customThe crude product is purified by silica gel chromatography (gradient of ethyl acetate in hexanes 10-100%)
Sources & evidence
- ORD record
- ord-48122ee664b24f0f870fa0f6210ffecf
- Source dataset
- uspto-grants-2013_01
- Patent number
- US08362063B2
Reaction notes
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