Question

1. Identify the predominant mono-nitrated product expected to form in the following reaction. HNO3 - H2SO4 ? NO o CH3 O N o NO2 CH₂ CHE (B) (D)

Answer 1

07 Answery option-8 . HNO3 H₂SO4 is nitrating agent used for introducing a -NO2 group in the Benzene ring. so, the last two option's & are eliminated. Nitration is aromatic electrophilic substitution reaction. For a substituted benzene ring, the Position preferred for -NO2 group substitution depends upon the electron density at that position. Higher is the electron density, higher is possibility for -NO2 gr. substitution. Here, -o-substituted & arb.gr.. 59 4 от 0.4 РоЭo Pottoms for 'Nitration while - e .gr prefers ometa position with respect to it. . -o-substituted gr has more treffect that is Why para position wir, to it is more electron rich again the marked position is meta orientated wer, to the nezo group.

apps - 8500 ezo group has -R effect. The position * marked is more electron rück . due to treffect of to- group & Ar effect of a carbonyl group... 8) MBP, s om Hző, nyooh Pilu Br @ (H2o attacks from up side) Just like SM² upside) I Naoh. (1 equivalent) OH NOCN, H₂O Du er ♡nen a option- (Al d attacks from backside of the epoxide ring.

Brz addition to cyclohexene, gives bromoniumion . H₂O reacts with ② and it is produced. bi equivo Naoh abstracts the proton from Low group and I is formed a negatively charged oxygen takes part in substitution reaction resulting epoxide TV. NacN in Ho generates wat eN ions (Ne) and epoxide ring opening reaction occurs by the PN nucleophile and I is formed