阿摩線上測驗
21 下列反應稱為 Knorr 吡咯合成，產物經由脫水縮合過程而得，結構式中的 R1~R4 為何？ 
(A) R1 = CH3 ; R2 = CO2C2H5 ; R3 = CH3 ; R4 = CO2C2H5
(B) R1 = CH3 ; R2 = CO2C2H5 ; R3 = CO2C2H5 ; R4 = CH3
(C) R1 = CO2C2H5 ; R2 = CH3 ; R3 = CH3 ; R4 = CO2C2H5
(D) R1 = CH3 ; R2 = CH3 ; R3 = CO2C2H5 ; R4 = CO2C2H5
(A) R1 = CH3 ; R2 = CO2C2H5 ; R3 = CH3 ; R4 = CO2C2H5
(B) R1 = CH3 ; R2 = CO2C2H5 ; R3 = CO2C2H5 ; R4 = CH3
(C) R1 = CO2C2H5 ; R2 = CH3 ; R3 = CH3 ; R4 = CO2C2H5
(D) R1 = CH3 ; R2 = CH3 ; R3 = CO2C2H5 ; R4 = CO2C2H5
答案：登入後查看
統計： A(19), B(5), C(3), D(7), E(0) #1166421
統計： A(19), B(5), C(3), D(7), E(0) #1166421
