問題詳情

45. Which is the major product of the following reaction? 


(A) I and II
(B) I and III
(C) II and III
(D) I and IV
(E) II and IV

參考答案

答案：A
難度：簡單0.785714
統計：A(11),B(2),C(0),D(0),E(1)