Write a test to differentiate between pentan-2-one and pentan-3-one.
lodoform test (yellow ppt. formed when heated with sodium hypohalite) Pentan-2-one gives positive test as it contains $-\mathrm{COCH}_3$ group whereas pentan-3-one does not.
Give the IUPAC names of the following compounds.
Following are the IUPAC names of the compounds
Give the structure of the following compounds.
(a) 4-nitropropiophenone
(b) 2-hydroxycyclopentanecarbaldehyde
(c) Phenyl acetaldehyde
Write IUPAC names of the following structures
The IUPAC names of the following structures are
24 Benzaldehyde can be obtained from benzal chloride. Write reactions for obtaining benzal chloride and then benzaldehyde from it.
It is the commercial method for preparing benzaldehyde. Benzal chloride can be obtained by photochlorination of toluene i.e., chlorination of toluene in presence of sunlight. Then, benzal chloride on heating with boiling water produces benzaldehyde as shown below.
