2-Nona-2,8-diynyl-2-prop-2-ynyl-malonic acid dimethyl ester

2-(8-Oxo-oct-2-ynyl)-2-(3-trimethylsilanyl-prop-2-ynyl)-malonic acid dimethyl ester

trimethyl (E)-3-propyl-4-((trimethylsilyl)methylene)cyclopentane-1,1,3-tricarboxylate

trimethyl (E)-3-(2,2-dichloroethyl)-4-((trimethylsilyl)methylene)cyclopentane-1,1,3-tricarboxylate