N-benzyl-(3S,6R)-3,6-diphenyl-2,3,5,6-tetrahydro-4H-1,4-oxazin-2-one 、
碘甲烷 在
potassium tert-butylate 作用下,
生成 (3S,6R)-N-benzyl-3-methyl-3,6-diphenyl-2,3,5,6-tetrahydro-4H-1,4-oxazin-2-one 、 (3R,6R)-N-benzyl-3-methyl-3,6-diphenyl-2,3,5,6-tetrahydro-4H-1,4-oxazin-2-one