13.2.3 Preparation (CH3)2C- NO EtOH (CH3) C NH Fe. hCl CH NO CH NH ON RNHA ①D Br O2N-〈 NHR NO ⑨D NO2Organic Chemistry Organic Chemistry Xiamen Xiamen University University 13.2.3 Preparation (CH3 ) 3 C NO 2 H 2 , P t EtOH (CH3 ) 3 C N H 2 CH 3 NO 2 O 2 N Fe, H C l CH 3 N H 2 H 2 N O Br 2 N NO 2 RNH 2 O 2 N NHR NO 2