What are the starting reactants for the following reaction?

$x=$ cyclopenta$-1,3-$diene; $Y=$ acrylaldehyde

$x=$ cyclohera$-1,3-$ene; $Y=$ ethyl acrylate

$x=$ cyclohexa$-1,3-$diene; $Y=$ ethyl acrylate

$x=$ hexa$-1,3-$diene: $Y=$ ethyl propiolate