Question

IUPAC name of the compound is :
O
||
H–C–CH₂–CH₂–OCH₃
(a) 2 – methoxypropanal (b) methoxypropanal
(c) 3 – methoxypropanal (d) 2 – formyl methoxyethane

Answer 1

IUPAC name of the compound is :

O

||

H–C–CH₂–CH₂–OCH₃

• Firstly, Numbering is done according to IUPAC rules.

O

||

H–C–CH₂–CH₂–OCH₃

1 2 3

• Aldehyde is given more priority than that of alkoxy group.

• Therefore alkoxy group is present in the prefix of name.

• IUPAC name of this compound is :

3-methoxypropanal