AB Tutorial

Added: 2026-05-12

[00:00:00]okay now here that is little bit the condition and will it changes so I am taking here tomlin plus chlorine in presence of 383 kelvin previously if you remembering I took it here an electrophilic reagent dar and room temperature it is 383 turbine in presence of sunlight the condition is changing now what is going to happen here now listen very carefully there the reaction which was taking place there it was nothing but an electrophilic substitution reaction what an electrophilic substitution reaction is taking place there all right here it is a side chain reaction is going to degrees that is this particular one will be a benzylic nobody spends i what i said ii that is with benzene ring ch2 group is attached it is said to be as benzene so here that is the Khloe is not going to go to the or third pair of positions why because in their profile it not be created and electrophile is not plated then what is this reaction or as it is a theoretical reaction this particular is it's a free radical reaction clearly used in a place and there it was electrophilic substitution reaction remember it see that conditions condition differs the reaction difference there the condition was that is I give it to you an electrophilic reagent fecl3 febr3 or Fe in presence of dark and room temperature here activity 383 convinced unlike no electrophilic reagent is there so you know your profile if sufficient reaction is going to take place rather it free radical reaction is going to take place and there the reaction was nuclear but it can save reactions that means the incoming your profile is really attached to the benzene ring here the body can find is that it Chloe we'll be attached to the side chain to the side Kent is going to attach that means that is what I said you've been silent that means the product will be searched to see a line HCL the product will be same thing here also that is the question which I left it to you same thing here we'll see if I take ch2 ch3 plus c2 same condition if I give it to you then here also I am going to get it that is nothing but CH 2 CL c x3 plus and Cl here it is why because here it is an alpha carbon atoms so in case of alpha carbon and the hydrogen atom is replaced by that chlorine atom be canceled that's clear because in that case in previous one where the reaction was taking place electrophilic substitution reaction that was due to the formation of carbo cation remember that that goes through the formation of carbo cation here the reaction is taking place through the formation of free radicals so yeah it is laterally to form the free radicals at alpha carbon atoms Anindita target because alpha carbon atom is nearer to the benzene ring so it is lagging to be release hydrogen from the alpha then beta but if you hurry if alpha is being fulfilled then it will go to beta the chlorine atom we go to beta then even is being fulfilled I'll just go to down in the 30 goes on but first alpha then be nothing dominant issue because again I repeat is a free radical reaction free radical bandage it's a fair so here no carbo cation is being formed for that particular purpose the reaction takes this and the sidechain we can separate okay so this is what what is taking place here now next we'll be seeing that if suppose I want to go for that is hydration of fluorination or something like that then what I am going to do here in this case I have to prepare a diazonium salt okay and conservatively we can carry up the reaction so that the live in the next course thank you