反应详情

2,2-dimethoxy-propane-1,3-diol (III) was synthesized according to the method of Ferroni, E. L., et al., J. Org. Chem., 64, 4943-4945 (1999). DHA dimer (25 g, 0.139 mole), trimethylorthoformate (30.4 ml, 0.278 mole) and p-toluenesulfonic acid (100 mg) were combined in 300 mL of methanol and stirred for 12 h. At this time 300 mg of Na2CO3 were added and the reaction mixture was stirred for an additional 12 h, after which the mixture was filtered and solvent was removed in vacuo. The resulting solid was recrystallized from ethyl ether to give 17.5 g of III (47%). 1H NMR (D2O) δ 3.58 (s; 4H), 3.24 (s; 6H). Anal. Calc.: C, 44.12; H, 8.82. Found: C, 44.50; H, 8.78.

1. custom2,2-dimethoxy-propane-1,3-diol (III) was synthesized
2. stirringthe reaction mixture was stirred for an additional 12 h
3. filtrationafter which the mixture was filtered
4. customsolvent was removed in vacuo
5. customThe resulting solid was recrystallized from ethyl ether