Give the structure of the following:

Phthalaldehyde

Give the structure of the following:

$3$-Methylcyclohexanecarbaldehyde
 

Give the structure of the following:

 $3$-methylbut-$2$-enoic acid

Write the IUPAC name of the following structure:

Write the IUPAC name of the following structure:

Give names of the reagents to bring about the following transformations:

 Benzoyl chloride to benzaldehyde
 

Give names of the reagents to bring about the following transformations:

 Benzene to benzaldehyde
 

Give names of the reagents to bring about the following transformation:

Benzene to acetophenone