H Name these: CH3一C≡CH propyne CH一C=C-CH一CH一Br 5-bromo-2-pentyne CH3 CH3 CH3一CH一CH一C=C-CH-CH 2,6-dime thyl-3-he ptyne > Chapter 9 4Chapter 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 2,6-dimethyl-3-heptyne =>