芳香胺 提w8 CH2CH3 NH2 Hac NH2 Aniline 4-Methylaniline (p-Toluidine) H-N: HN H H between sp2and sp3 4-Methylaniline (p-Toluidine) Aniline NH2 H3 C NH2 芳香胺 N H H N H H + between sp and sp 2 3