Alcohols Phenols And Ethers Question 25
Question: At 530 K, glycerol reacts with oxalic acid to produce
[Pb. CET 2002]
Options:
A) Allyl alcohol
B) Formic acid
C) Glyceraldehyde
D) Glycerol monooxalate
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Answer:
Correct Answer: A
Solution:
$ \underset{\text{oxalic acid}}{\mathop{\underset{COOH}{\overset{COOH}{\mathop{|\ \ \ \ \ \ \ }}}\ }}+\ \underset{Glycerol}{\mathop{\underset{CH_2OH}{\overset{CH_2OH}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}HOH\ }}}}}\xrightarrow{380\ K}\ \underset{\text{Formic acid}}{\mathop{HCOOH}}\ +\ CO_2\uparrow $
$ \underset{\text{oxalic acid}}{\mathop{\underset{COOH}{\overset{COOH}{\mathop{|\ \ \ \ \ \ \ }}}\ }}+\ \underset{Glycerol}{\mathop{\underset{CH_2OH}{\overset{CH_2OH}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}HOH\ }}}}}\to \ \underset{Dioxalin}{\mathop{\underset{CH_2OH\ }{\overset{CH_2OCO}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}HO\ \overset{|}{\mathop{C}}O}}}}}\xrightarrow{-2CO_2}\underset{\text{Allyl alcohol}}{\mathop{\underset{CH_2OH}{\overset{CH_2\ \ \ \ }{\mathop{\underset{|}{\overset{||}{\mathop{C}}}H\ \ \ \ \ \ }}}}} $ Thus at 530 K allyl alcohol is formed.
BETA
