Question

Q.16)
Naphthalene undergoes nitration with
conc.HNO3/H2SO4 at 50°-60°C to give
mainly__ (1 marks )
Ans.
1,8-dinitronaphthalene
1-nitronaphthalene
2-nitronaphthalene
1,2-dinitronaphthalene​

Answer 1

Answer:

1-nitronaphthalene

Explanation:

1-nitronaphthalene as the major product and 2-nitronaphthalene  as the minor product.

Answer 2

NITRATION OF NAPHTHALENE

Naphthalene undergoes titration with conc HNO3/H2SO4 AT 50-60 degrees to give mainly 1- nitronaphthalene as main product and 2-nitronaphthalene as side product

SOME OF THER POINTERS OF NITRITES OF NAPHTHALENE ARE:

* Clusters of 1-nitronaphthalene molecules form. The assembly of molecules into supramolecular structures on surfaces requires a delicate balance of intermolecular and molecule–surface interactions.

* The total system on the surface is racemic both at the molecule size (local adsorption motif) and at the cluster scale because the molecule in three dimensions, that is, in the gas phase before adsorption onto the surface, is not chiral.

* In rodents, 1-Nitronaphthalene, a carcinogenic nitroaromatic chemical found in diesel exhaust, causes acute liver and lung damage. 1-Nitronaphthalene is a cyto  toxicant for non ciliated bronchiolar epithelial (Clara) cells that has been bioactivated by cytochrome P450.