反应详情

Starting from 103 g (0.72 mol) of pentane-2,3,4-trione 3-(O-methyloxime), 275 g (3.62 mol) of 1,3-propanediol, 80 g (0.76 mol) of trimethyl orthoformate and 1.6 g of p-toluenesulfonic acid (9 mmol) and using the procedure of Example 2, 137 g (94% yield) of a reddish oil were obtained which, according to HPLC, had a purity of 70% (phys. data see Tab. 1).