日本一区二区免费在线不卡-AV片手机在线看-成人综合久久综合-av性色一区二区三区

Halogenation reactions (nucleophilic and electrophilic bromination, chlorination and fluorination reactions); diazotization and related chemical reactions; preparation and application reactions of Grignard reagents; redox reactions; metal-catalyzed coupling reactions; chiral Resolution and asymmetric synthesis reaction and so on.