Question

Given below are two reaction sequences.


For product $A$ of reaction $-1$ (no intramolecular mechanism), $x=\frac{massofBratomsinA}{massofClatomsinA}$
For REACTION $-2,z=$ total no. of organic products including stereoisomer. Find value of $\left(x+z\right)$ (nearest integer)

Answer 1

Answer: 4

$S_{N}2$ at Vinylic carbon and at bridge-head carbon of non-fused bicyclo rings NOT POSSIBLE, but $Ar{S}_N$ via carbanion occurs at phenylic $Cl$ , Product $A$ of the reaction sequence $-1$ is,

$Ar{S}_N$ via Benzyne give ipso substitution and cine substitution products (two structural isomers in this case) which on further reaction with $HBr/ROOR$ (Kharasch Effect) do not give any stereo products as no new chiral centre is generated, hence final products for reaction sequence $-2$ are
So, $x=\frac{80\times 1}{35.5\times 1}=2.25$ and $z=2$ , Hence value of $\left(x+z\right)=4.25$