ALCOHOLS, PHENOLS AND ETHER
15517
Glycerol \(\xrightarrow{{KHS{O_4}}}A\xrightarrow{{LiAl{H_4}}}B\)\(A\) and \(B\) are :
1 Acrolein, allyl alcohol
2 Glyceryl sulphate, acrylic acid
3 Allyl alcohol, acrolein
4 Only acrolein (\(B\) is not formed)
Explanation:
When glycerol is heated with dehydrating agents like sulphuric acid, potassium hydrogen sulphate, phosphorous pentoxide etc. gives acrolein.
Acrolein- \(CH _2= CH - CHO\)
\(LiAlH _4\) reduces \(CH _2= CH - CHO\) to \(CH _2= CH - CH _2 OH\).