CH I CH3 -C-NH2 NH 2 CH tert-butylamine Cyclohexylamine CH NH2 己NH -NH2 CH o 1, 4-Butanediamine 4, 4-DimethylcyclohexanamineOrganic Chemistry Organic Chemistry Xiamen Xiamen University University CH 3 C CH 3 CH 3 NH 2 NH 2 tert-Butylamine C yclo hexylamine NH 2 NH 2 NH 2 CH 3 CH 3 1,4 - B utaned iam i n e 4,4 - D i methylcycl ohex anam ine