4-methyl-5-methylidene-4-phenyl-1,3-dioxolan-2-one

2,4-二苯基吡啶

α-甲基苯乙烯

benzoic acid 1-methyl-2-oxo-1-phenyl-propyl ester

2-prop-2-enoxybut-3-yn-2-ylbenzene