2,4-二甲基苯甲醛 、
<1-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthyl)-ethyl>-triphenylphosphonium bromide 以can be obtained 6-[(E)-α,2,4-trimethylstyryl]-1,2,3,4-tetrahydro-1,1,4,4-tetramethylnaphthalene of melting point 54°-56° C.的产率得到6-[(E)-α,2,4-trimethylstyryl]-1,2,3,4-tetrahydro-1,1,4,4-tetramethylnaphthalene