試題詳解

18. (continued) Consider the ¹H-NMR spectrum of very pure Remdesivir. Presuming that J_ab is sufficiently different from J_bc and that the instrument has sufficient resolving power. Assuming the maximum multiplicity of signals and non-superposition of peaks, what is the expected signal splitting pattern for each signal, in the order (H_a, H_b, H_c). Note: s: singlet, d: doublet, t: triplet, dd: doublet of doublet, dt: doublet of triplet
(A) d, dd, dt
(B) s, dd, dt
(C) d, dd, d
(D) d, t, d
(E) s, t, dt