Texts: An unknown compound X has the molecular formula ClOHB. Compound X shows a strong absorption in its IR spectrum at 1700 cm-1. The 1H NMR spectral data for compound X is given below. What is the structure of compound X?
Absorption: 8 (doublet), 1.0 (singlet), 5.5 (quartet), broad singlet 7.2
Ratio: 3:2:1:5
Br
8
Cl or II
D Only I
A Only III
B Only II