6-acetyloxymethyl-3-(1-methyl-1-phenylethyl)-5-phenyl-2,3-dihydro-4H-1,3-oxazin-4-one 、
potassium carbonate 在
甲醇 、
乙酸乙酯 、
magnesium sulfate 作用下,
以
甲醇 为溶剂,
反应 1.0h,
以to afford the captioned product (4.0 g, yield 91%)的产率得到6-hydroxymethyl-3-(1-methyl-1-phenylethyl)-5-phenyl-2,3-dihydro-4H-1,3-oxazin-4-one