Consider the following reactions:

Which of the following reagents is/are used in the above conversion?

Options

A.
B.
C.
D.

Answer

C, D

Explanation

A `implies` The protection of

group by

(because it gives a six-membered ring). If the protection of

group is carried out by

it would give a five-membered ring (cyclic ketal).
B `implies` Ester is converted to `(RHO+R'OH)`. It can be carried out by `LAH//"ether", H_(3)O^(+)` or by `B_(2)H_(6)//THF`.
C `implies 1^(@)` Alcohol is converted to aldehyde and is carried out by `PC C` or by Jones reagent `(H_(2)CrO_(4)+"aq. acetone")`.
`D implies` Aldehyde is converted to alkane by Clemmensen's `(Zn-Hg//HCl)` or by Wolff-Kishner reduction `(PhNHNH_(2)+ glycol+ KOH)`.
`E implies` Cyclic ketal is hydrolysed to give back ketone. So the answers are `(c )` and `(d)`