4-phenoxy-5,6-di-fluoropyrimidine 、 3-[1-(2-hydroxyphenyl)-2-methoxyethen-1-yl]-5,6-dihydro-1,4,2-dioxazine 以
N-甲基乙酰胺 、
环己烷 、
乙酸乙酯 、 mineral oil 为溶剂,
生成 3-{1-[2-(4-phenoxy-5-fluoropyrimid-6-yloxy)-phenyl]-2-methoxyethen-1-yl}-5,6-dihydro-1,4,2-dioxazine