3-(salicylideneamino)-1-hydroxypropane 、
3-(3-hydroxy-1-propyl)amino-1-phenyl-2-butene-1-one 在
正硅酸四乙酯 作用下,
以
苯 为溶剂,
生成 (7
E,7'
E,9'
Z)-8'-methyl-10'-phenyl-5,6,5',6'-tetrahydro-4
H,4'
H-spiro[benzo[
d][1,3,7,2]dioxazasilecine-2,2'-[1,3,7,2]dioxazasilecine]