[CH3:1][C:2]1[CH:12]=[CH:11][CH:10]=[CH:9][C:3]=1[CH:4]=[CH:5][C:6]([OH:8])=[O:7].[CH2:13]1CCN2C(=NCCC2)CC1.CI>CN(C=O)C.CCOCC>[CH3:1][C:2]1[CH:12]=[CH:11][CH:10]=[CH:9][C:3]=1/[CH:4]=[CH:5]/[C:6]([O:8][CH3:13])=[O:7]To 2-methylcinnamic acid (100 g; 617 mmol) in 1.2L of DMF was added DBU (112.6 g; 740 mmol) and 15 min later methyl iodide (131.3 g; 925 mmol) and left overnight. The solution was diluted in ether and washed with HCl (10%), H2O and brine. The solvent was removed to give 106.8 g of the title compound.
Wird geladen…