2-环戊炔-2-丙二酸二乙酯

trichloro(cyclopent-3-en-1-yl)silane

ditert-butyl 2,3-diazabicyclo[2.2.1]hept-5-ene-2,3-dicarboxylate

5-甲基螺(2.4)庚-4,6-二烯

二(三甲基硅烷基)环戊二烯