dihydro-4-bromo-2-isopropyl-2H-1,2-oxazin-3(4H)-one 、
3,5-二叔丁基-4-羟基苯甲醛 在
锌 silica gel 、
ethyl acetate n-hexane 作用下,
以
苯 为溶剂,
反应 15.0h,
以to yield 1.2 g of dihydro-4-[(3,5-di-tert-butyl-4-hydroxyphenyl)hydroxymethyl]-2-isopropyl-2H-1,2-oxazin-3(4H)-one, mp 150°-153° C.的产率得到dihydro-4-[(3,5-di-tert-butyl-4-hydroxyphenyl)hydroxymethyl]-2-isopropyl-2H-1,2-oxazin-3(4H)-one