(4) COoCH 答案 COOCH COaCH COOCH3 问题4.12哪些二烯体与亲二烯体进行 Diels- Alder反应,可得到下列化合物? CN 答案: O2CH3 习题+ COOCH3 COOCH3 + O O O (3) (4) 答案: + NO2 + O O O (1) (2) + COOCH3 COOCH3 + O O O (3) (4) NO2 O O O CO2CH3 CO2CH3 O O O 问题 4.12 哪些二烯体与亲二烯体进行 Diels-Alder 反应,可得到下列化合物? COOCH3 COOCH3 (1) (2) CN CN 答案: + CO2CH3 CO2CH3 (1) (2) + CN NC 习题