Question

write teh IUPAC name of CH2CHOHCH2CHO​

Answer 1

The IUPAC name of  $CH_2=CH(OH)-CH_2-CHO$ is 3-hydroxybut-3-enal.

Explanation:

• First we shall do the numbering of each carbon atom present in the given compound such that the functional group with high preference order (here, the aldehyde group) shall get the minimum possible number.
• The aldehyde group thus gets number 1 and it follows all the way down to the last carbon which contains a double bond.
• While numbering we shall notice that the unsaturated double bond get the number 3 and 4 and alcohol group gets the number 3.
• Now, we shall use the secondary name for less preferable group (here, alcohol group) and write the name of the compound in alphabetical order.

Final Answer:

The IUPAC name of  $CH_2=CH(OH)-CH_2-CHO$ is 3-hydroxybut-3-enal.