Classify: H CH2CH3 CH3 N CH3 H CH3 Br CH3- C-NH2 CH3CH2-N-CH2CH3 CH3 CH3 三> Chapter 19 5 Chapter 19 5 Classify: N H CH3 C CH3 CH3 NH2 N CH3 CH3 CH3CH2 N CH3 CH2CH3 + Br _ =>