Name these: CH3一C≡CH propyne CH一C≡C-CH2一CH一Br 5-bromo-2-pentyne 5-bromopent-2-yne CHs CH3 CH一CH-CH2一C≡C-CH-CH 2,6-dimethyl-3-heptyne 2,6-dimethylpept-3-yne > Chapter 9 4 Chapter 9 4 Name these: CH3 CH CH3 CH2 C C CH CH3 CH3 CH3 C C CH2 CH2 Br CH3 C CH propyne 5-bromo-2-pentyne 5-bromopent-2-yne => 2,6-dimethyl-3-heptyne 2,6-dimethylpept-3-yne