Draw the products of each SN1 reaction and indicate the stereochemistry of any stereogenic cente

Draw the products of each SN1 reaction and indicate the...

Transcript

00:02 Here two equations given and you have to draw the structure of the product and discuss it's a stereochemistry.

00:12 One more thing is given that both reactions are following sn1 mechanism.

00:22 Sn1 that means substitution nucleophilic unimolecular where the reaction is taking place in two steps in the first step, carbocatin is formed and in the second step attack of the nucleophilic.

00:36 Liquid reagent taking place.

00:38 So in the first case when br is going as br minus carbocatin which is formed is trigonal planar structure so it should be central carbon this is one methyl group below the plane you can write it is ch ch 3 twice here and above the plane it should be ch2 ch3 with the positive charge at the center so this is the carbocation which is trigonal planar structure now the attack of the nucleophilic reagent which is here water can take place from both the side so attack can take place from this side or it can from this side and in that case the product formed is one carbon here with a group then after the removal of one proton which is coming over here in the product and if here it is ch2 ch3 then below the plane it should be ch ch3 twice so this is the first compound formed and the second compound should be attack is taking place from the other side and by that the product should be lethal group is not distant oh is coming here now ch2 ch3 will remain same this side above the plane and below the plane it should be ch ch 2.

03:32 So actually it is mirror image of this product and chances of attack from both the side is equal in case of triangular planar structure of the carbonium ion and that is why 50 % this isomer and 50 % these isomers are formed and you are getting the racemic mixture these two isomers are known as inensiomers which are mirror images of each other and these mirror images are non -support imposition mirror images now what happens in the second case here also it is following s and one mechanism so first step is formation of carbocatinin closing seal minus and carbocatinis flat so this cyclo has seen ring should be here hydrogen is above the plane this part should be below the plane and methyl crop is making the trigonal planar structure positive charge appears here and leaving chlorine as c...

Please give Ace some feedback