Complete the following reactions :
(a) `underset(i-BuBr)((A))overset(1.Li)underset(2.CuI)to(B)overset(Ph-overset(O)overset(||)(C)-Cl)to(C)`
(b)
( c)
(d)
( e) .

Explanation

(a)
(b) Ester reacts with `2 mol` of `BuLi` to give `3^@` alcohol, the two `R` groups come from `BuLi(R = Butyl-)`.

( c)
(d) Dialkyl lithium cuprate reats with `(-C-overset(O)overset(||)(C)-Cl)` group to give ketone. One `R'` group is obtained from dialkyl lithium cuprate and simultaneously it reacts with `(R -Cl)` group to give `(R - R')`, i.e., Corey-House synthesis also takes place (`R'` group comes from `R'_2 CuLi`)

( e) `(L)` is a cyclic anhydride. The anhydride on reaction with `2 mol` of `G.R` gives `3^@` alcohol (two `R` groups come from the `G.R`) Moreever, cleavage of ring takes place on the side where `EWG` is present since `NA` reaction is favoured by `EWG`.
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