Question 1
The
1H NMR spectrum of a compound with formula C
7H
14O shows a singlet at 9.2 ppm. Which one of the choices is a possible structure for this compound?
◦ 2,2-dimethyl-3-pentanone
◦ 2-methylhexanal
◦ 2,2 -dimethylpentanal
◦ 2-methyl-3-hexanone
◦ B & C
Question 2
Provide a structure for the compound with molecular formula C
5H
10O and with the following spectroscopic data.
IR: 1720 cm
-1
1H NMR: 0.9 δ (triplet, 3H), 1.7 δ (sextet, 2H), 2.1 δ (singlet, 3H), 2.4 δ (triplet, 2H)
◦ I
◦ II
◦ III
◦ IV
◦ V