<1-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthyl)-ethyl>-triphenylphosphonium bromide 、
4-异丙基苯甲醛 以can be obtained 6-[(E)-p-isopropyl-α-methylstyryl]-1,2,3,4-tetrahydro-1,1,4,4-tetramethylnaphthalene of melting point 86°-87° C.的产率得到6-[(E)-p-isopropyl-α-methylstyryl]-1,2,3,4-tetrahydro-1,1,4,4-tetramethylnaphthalene