Question

Reaction of aldohexoses with H2/NI

Answer 1

Explanation:

As H2/Ni is good reducing agent , it makes complete saturation by giving two nascent hydrogens where double or triple bond is present . and also reduces functional groups like aldehydes, ketones, carboxylic acids by providing required nascent hydrogens.

for example consider glucose, a aldohexose.

CHO--(CH--OH)4---CH2OH---------------------------------

(Glucose). (H2/Ni)

CH2-OH----(CH--OH)4---CH2OH.

(hexa hydric alchohol).