chloro-((E)-1-ethyl-but-1-enyl)-mercury

1-bromo-2-propylacetylene

9-(cis-1-ethyl-1-butenyl)-9-borabicyclo{3.3.1}nonane

2,3,4,5-tetraethylmagnesacyclopenta-2,4-diene

trimethyl(oct-1-ynyl)silane