The reaction of 1-ethynyl-2-vinyl-3,4-dihydronaphthalenes and 1-ethynyl-2-vinylnaphthalenes over RuCl2(p-cymene) PPh3 leads to 9,10-dihydrophenanthrenes and phenanthrenes in those cases where the ethynyl group in the substrates carries a terminal proton. When 1-phenylethynyl-2-vinyl-3,4-dihydronaphthalenes or 1-phenylethynyl-2-vinylnaphthalenes are reacted over Pt(PPh3)4, 1-methylene-1H-benz[e]-4,5-dihydroindenes and 1-methylene-1H-benz[e]indenes are formed.
当底物中的乙炔基带有末端质子时,1-乙炔基-2-乙烯基-3,4-二氢萘和 1-乙炔基-2-乙烯基萘在 RuCl2(p-cymene) PPh3 上反应生成 9,10-二氢菲和菲。当 1-苯基乙炔基-2-乙烯基-3,4-二氢萘或 1-苯基乙炔基-2-乙烯基萘在 Pt(PPh3)4 上反应时,会生成 1-亚甲基-1H-苯并[e]-4,5-二氢茚和 1-亚甲基-1H-苯并[e]茚。