00:01
See how the reaction occurs here the reaction is 1 -3 -synaptropical rearrangement the carbon shift so 1 -3 -synaptopic rearrangement could be written this way or we can just duplicate the same way as we have done in the problem here is a double bond so we can think of a this this you can think of a shift of this carbon here over to this place and a shift a double bond so we can think the cyclotropic rearrangement is occurring with the mechanism shown here so it's just shift of this carbon over to this side now this one three sigma tropic rearrangement should occur with an inversion of configuration that can be easily understood if we look at the orbital symmetric here in the 103 sigma tropic reliance valve situ should be the homo and situ is anti -symmetric so the carbon atom of the r group which is attached should have the same facing as it is bounded here with the substituents on the carbon in this direction.
02:07
Now, after detersing from here, breaking this bond, and if it is to form a bond, it has to get inverted here.
02:16
So this is how it will approach.
02:30
It will bond only in the reverse direction.
02:36
You can see here, the groups on the left have come to the right in this way.
02:47
So there should be an inversion of configuration at the site of a reaction.
02:56
Now let us analyze this reaction also in the same fashion.
03:02
This is the orbital which is already having the bonding.
03:17
And if we analyze, there's the bonding here...