Dimethyl malonate → HCID 18626507、化合物
反応式
[C:1]([O:8][CH3:9])(=[O:7])[CH2:2][C:3]([O:5][CH3:6])=[O:4].[CH3:10][O:11][C:12]1[CH:13]=[C:14]([CH:17]=[CH:18][C:19]=1[CH3:20])[CH2:15]Br>CO>[CH3:10][O:11][C:12]1[CH:13]=[C:14]([CH:17]=[CH:18][C:19]=1[CH3:20])[CH2:15][CH:2]([C:1]([O:8][CH3:9])=[O:7])[C:3]([O:5][CH3:6])=[O:4]参加物
4
実験手順
A solution of 2.6 g (0.1124 g-atom) of Na in 50 mL of MeOH was treated with 12.9 mL (0.1124 mol) of dimethyl malonate and allowed to stir for 45 minutes. This was then treated dropwise with 24.17 g (0.1124 mol) of 3-methoxy-4-methylbenzyl bromide and the solution heated at reflux overnight. The solvent was removed under reduced pressure and the residue taken up in EtOAc. This was washed with 6% HCl, H2O, saturated NaHCO3, and saturated NaCl. Drying over MgSO4 and removal of the solvent under reduced pressure gave 28.54 g (95.5% yield) of the product as a pale yellow oil. The structure was confirmed by NMR spectroscopy.