Question 1
A compound with molecular formula C
6H
12O
2 exhibits two singlets in its
1H NMR spectrum, at δ 1.4 (9H) and δ 2.0 (3H). Its IR spectrum shows a strong absorption band near 1740 cm
-1. What is the structure for this compound?


◦ I
◦ II
◦ III
◦ IV
◦ V
Question 2
A compound with molecular formula C
8H
14O
4 exhibits a triplet at δ 1.3 (6H), a singlet at δ 2.6 (4H) and a quartet at δ 4.2 (4H) in its
1H NMR spectrum. Its IR spectrum shows a strong absorption band near 1740 cm
-1. What is the structure for this compound?


◦ I
◦ II
◦ III
◦ IV
◦ none of these