00:01
Hi, we have to show the efficient synthesis for the given reaction.
00:05
So for part a, we will first add n -bromo succinimide written as nbs.
00:15
This is a very good brominating agent and this is added in presence of ccl4.
00:21
This will add bromine to this carbon.
00:25
Now this bromine can be replaced by the hydroxide and by addition of water as bromine is a very good leaving group.
00:36
So the desired product is obtained by first adding nbs and then adding water.
00:41
In part b, ethyl benzene is taken initially and we need to introduce a double bond here.
00:49
So first again we will add a bromine group at this carbon atom.
00:55
So we will add brominating agent again we can use nbs in presence of ccl4.
01:01
So a bromine group is added here.
01:04
Now we will add naoh which will lead to formation of a double bond in the alkyl chain.
01:12
Now in part c, methyl benzene is given.
01:17
In this we will add nbs again, one equivalent in presence of ccl4.
01:24
Bromine gets attached to this carbon.
01:27
Now we need to replace this bromine by the cyanide group so we can add nacn.
01:32
So we get cyanide group at this position.
01:36
In d part we have this reactant...