(2,2-diethoxycyclopropyl)benzene

6-cyclohexylidene-2,2-diethoxyspiro[2.3]hexane

ethyl 3-naphthalen-1-ylprop-2-enoate

ethyl 2-acetyl-3-ethoxybut-2-enoate

1-(1-piperidin-1-ylethenyl)piperidine