Tetraphenyl‐substituted carotenoids with improved antioxidant and electronic conducting properties than natural carotenoids were synthesized through the formation of all‐E‐apocarotenedials (4), which were prepared by the sulfone‐mediated olefinations of the novel building blocks 7 and 3, or 8 and 9 with E‐configurations. (E)‐4‐Chloro‐2‐phenylbut‐2‐enal (10) was the key material for the syntheses.