00:01
For sn1 reaction, we have to consider the reactivity order of alkyl halides.
00:06
Okay.
00:07
So, reactivity order of alkyl halides.
00:23
So, that is tertiary alkyl halide.
00:34
That is the most reactive.
00:37
Okay.
00:38
We are considering for sn1, right? or sn1 so tertiary alkyl halide is the most reactive secondary alkyl halide is least less reactive than tertiary and primary alkyl halide that is the least reactive one okay or you can also write in the terms of three degree is the most reactive 2 degrees less reactive and 1 degree is the least reactive okay so now consider the structure and yes also what is the reason behind this okay so for sn 1 reaction that reaction takes place in two parts slow step and the fast step that slow step is the rate data mining step and in that step carbocation formation take place okay so more since more stable more stable the carbocation more is the reactivity okay first part so we have a alkyl allied like this and and this one.
02:49
Okay.
02:49
So, now consider the carbon atom containing chloro group.
02:53
Okay.
02:53
The carbon atom containing chloro group is further attached to three more carbon atoms.
02:58
Okay.
02:58
So, this is what? tertiary.
03:00
T degree.
03:01
And this one, the carbon atom containing chloro group is attached to two carbon atoms.
03:07
So, this is what? secondary.
03:08
Okay.
03:09
I hope you know how to determine the primary, secondary or tertiary carbocation or carbon.
03:14
So, for that you have to consider the number of carbon atoms the halogen group containing carbon is attached to.
03:24
Okay.
03:24
So, here the halogen group, the chloro group is attached to this carbon.
03:28
So, this carbon consists of three carbons.
03:30
So, this is tertiary.
03:31
This carbon attached to chloro group consists of two carbons.
03:35
So, this is secondary.
03:36
Okay.
03:37
Okay, so that's why we can say that this tertiary halide is the most reactive for sn1.
03:50
Okay, now let me draw the another structure second part.
03:57
We have cyclohexyl chloride.
03:59
Let me draw the structure.
04:00
We have a cyclohexane ring containing chloro group and we have a chlorobenzene.
04:04
Okay, so this means that we have a benzene ring containing chloro group.
04:10
Okay.
04:10
Now, here consider this carbon atom containing chloro growth and this one.
04:17
This carbon atom is here...