(1R,4S)-4-methyl-6-phenyl-2,3,7-trioxa-5-azabicyclo[2.2.1]hept-5-ene

(1S,4R)-4,6-Dimethyl-2,3,7-trioxa-5-aza-bicyclo[2.2.1]hept-5-ene

正丙酸乙酯

丙酮

propene