21. What reagent should be used for the following reaction?
?
(A) CH3CH2MgBr
(B) CH3CH2Li
(C) (CH3CH2)2Zn
(D) CH3CH2B(OH)2
(E) (CH3CH2)2CuLi
答案:登入後查看
統計: A(3), B(2), C(2), D(2), E(20) #941845
統計: A(3), B(2), C(2), D(2), E(20) #941845