3歌合 Pd/BaSo4 2 CH=CH NAcL CH=CH-C≡CH CH2=ch-Ch= che Check CH=CH NHCI CuCk CHe=CH-C=C-CHFCHe 500C 3CH=CH Cu Ni(CN)2 D 4CH= CH 50C3. 聚合 2 CH = CH CH2 = CH - C = CH NH4Cl Cu2Cl2 Pd/BaSO4 H2 CH2 = CH - CH = CH2 CH = CH NH4Cl / Cu2Cl2 CH2=CH-C=C-CH=CH2 3 CH = CH Cu 500 C 4 CH = CH Ni(CN)2 50 C