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Among benzene and toluene, which one will undergo nitration reactions easily and why ? |
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Answer» Solution :(i) If electron desnity of the benzene right increases, then reactivity of the ring towards electrophillic SUBSTITUTION also increases. In TOLUENE, `-CH_(3)` group increases the electron density of the ring and as a result, reactivity of the ring also increases due `+1` and hyperconjugation effect of `-CH_(3)` group. So, nitration occurs more easily for toluene than unsubstituted benzene (ii) `{:(underset(A)(CH-=CNA) underset(1mol)overset(Na)larr CH-= CH underset(1% HgSO_(4), 80^(@)C)overset(dil H_(2)SO_(4))rarr underset(B)(CH_(3)CHO)),(underset("acetylide")("Monosodium") ""darrunderset(600^(@)C)("Red hot iron tune,") "Acetaldehyde"),(""underset(C)(""C_(6)H_(6)) overset(Fe//Cl_(2)(1 "mol"))rarr underset(D)(C_(6)H_(5)Cl)),("Benznechlorobenzene"):}` A: Monosodium acetylide `(CH -= CNa)` B: Acetaldehyde `(CH_(3)CHO)` C: Benzene `(C_(6)H_(6))`, D: Chlorobenzene `(C_(6)H_(5)Cl)` |
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