ORGANIC CHEMISTRY Chapter 8 H C-C. + CH 2 C-C CH CH CH (A-2-Butene Methylene CH cis-1, 2-Dimethylcyclopropane Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 8 H C CH3 C H CH3 H C CH3 C HCH3 CH2 H C CH3 C H CH3 CH2 + CH2 Methylene cis-1,2-Dimethylcyclopropane (Z)-2-Butene