1.give the mechanism for the benzoylation of aniline.
2. Why is -NH2group of aniline acetylated before nitration ?
3. for the distinction of 1o,2o,3o amines benzenesulphonyl chloride is replaced by _____ ? Why ?
4. Which nitrogen compounds used as insect attractants and why ?
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1) The reaction for the benzoylation of aniline is as follows:
.bmp)
The mechanism is as follows:
.bmp)
2) Nitration of aniline is done by using conc.HNO3 and conc.H2SO4.Since, HNO3 is a strong oxidising agent, it oxidises the NH2 group of aniline.So, NH2 group of aniline is protected by acetylation to give acetanilide after which nitration is done followed by hydrolysis to get the desired nitroaniline.
.bmp)
1) The reaction for the benzoylation of aniline is as follows:
The mechanism is as follows:
2) Nitration of aniline is done by using conc.HNO3 and conc.H2SO4.Since, HNO3 is a strong oxidising agent, it oxidises the NH2 group of aniline.So, NH2 group of aniline is protected by acetylation to give acetanilide after which nitration is done followed by hydrolysis to get the desired nitroaniline.