[CH:1](=[O:13])[C:2]1[CH:12]=[C:9]([O:10][CH3:11])[C:7]([OH:8])=[C:4]([O:5][CH3:6])[CH:3]=1.I[CH2:15][CH2:16][OH:17].C(=O)([O-])[O-].[K+].[K+].Cl>O.CN(C=O)C>[CH3:11][O:10][C:9]1[CH:12]=[C:2]([CH:3]=[C:4]([O:5][CH3:6])[C:7]=1[O:8][CH2:15][CH2:16][OH:17])[CH:1]=[O:13]
Syringaldehyde (1.0 g, 5.49 mmole), 2-iodo-1-ethanol (1.90 g, 10.98 mmole) and potassium carbonate (1.90 g, 13.77 mmole) are added to 15 ml dry DMF and stirred for 24 hours at 80° C. under an argon atmosphere. The reaction mixture is added to 100 ml H2O and acidified with 10% HCl. The product is extracted into CHCl3, dried over MgSO4, and concentrated to an oil in vacuo. The remaining oil is purified by flash column chromatography using 1:1 hex/ethyl acetate as eluent (1.009 g, 81%).
Wird geladen…
