Question

What is the reaction between monossaccharide With alkaline solution and hydrogen in presence of palladium catalyst?

Answer 1

The open-chain form of the monosaccharide is reduced to an alcohol.

Explanation:

The general equation for the reaction is

`"RCOR'" stackrelcolor(blue)("H"_2, "Pd"color(white)(mm))(→) "RCHOHR'"`

where `"R'"` can be H or an alkyl group.

For example, in solution glucose is in equilibrium with its open-chain form.

The open-chain aldehyde form is then reduced by the `"H"_2"/Pd"` to glucitol (more commonly called sorbitol).

(From The Mad Science Blog)