3-methyl-5-prop-1-enyl-4,5-dihydro-1,2-oxazole

3-丙酰基吡啶

(E)-3-(2-nitroprop-1-en-1-yl)pyridine

2-硝基丙酸乙酯

3-甲基异唑-4-甲酸乙酯