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RCOOH after treatment with PCl(5) and KC...

RCOOH after treatment with `PCl_(5)` and KCN is subjected to hydrolysis followed by Clemmension's reduction, product obtained as `:

A

`RCH_(2)-COCl`

B

`RCH_(2)-COOH`

C

`RCOCN`

D

`RCN`

Text Solution

Verified by Experts

The correct Answer is:
B
`R-COOH+PCl_(5)rarrRCOCl+POCl_(3)+HCloverset(KCN)(rarr)RCOOCN+KClunderset(H^(+))overset(2H_(2)O)(rarr)RCOCOOH+2NH_(3)underset(Zn-Hg//conc. HCl)overset("Clemmensen's reduction")(rarr)RCH_(2)COOH+H_(2)O`
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