The stereospecific preparation of (E)-1-aryl-F-1,3-butadienes

► Preparation of (E)-1-aryl-F-1,3-butadienes. ► (Z)-1-Tri-n-butylstannyl-1,2,3,4,4-pentafluorlo-1,3-butadiene synthon. ► 1-Triethylsilyl-1E,3E-1,2,3,4,5,6,6-heptafluoro-1,3,5-hexatriene synthon.