[CH:1]1[CH:6]=[CH:5][C:4]([CH2:7][CH2:8][OH:9])=[CH:3][CH:2]=1.[C:10]([CH2:12][C:13](O)=[O:14])#[N:11]>CN(C=O)C.CN(C)C1C=CN=CC=1>[C:10]([CH2:12][C:13]([O:9][CH2:8][CH2:7][C:4]1[CH:5]=[CH:6][CH:1]=[CH:2][CH:3]=1)=[O:14])#[N:11]To a solution of β-phenethyl alcohol (3.6 ml, 30.0 mmol) in DMF (30 ml) was added cyanoacetic acid (2.55 g, 30.0 mmol) in DMF (20 ml) and the whole was cooled to 0° C. 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimido (4.66 g, 30.0 mmol) in DMF (5 ml) and 4-dimethylaminopyridine (0.37 g, 3.0 mmol) in DMF (10 ml) were then added to the mixture in that order at 0° C. and stirring was continued for 1 hour at this temperature and 18 hours at room temperature. The reaction mixture was concentrated in vacuo and purified by column chromatography to afford phenethyl cyanoacetate (2.49 g, 13.2 mmol).
Wird geladen…
