問題詳情
35. Which of the following is a correct prediction of the chemical shifts (ppm) for the signals in the 1H NMR spectrum for thefollowing compound?
(A) a = 5.7, b = 5.2, c = 4.4, d = 1.9
(B) a = 5.2, b = 5.7, c = 1.9, d = 4.4
(C) a = 4.4, b = 5.2, c = 1.9, d = 1.9
(D) a = 5.2, b = 4.4, c = 5.7, d = 1.9
(E) a = 1.9, b = 5.7, c = 5.2, d = 4.4
參考答案
答案：D
難度：適中0.6
統計：A(1),B(0),C(0),D(3),E(0)