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Few questions about aldehydes and ketones?

scilearner
in Chemistry

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Hello everyone,

 

1. As you increase alkalinity of the solution open chain form of monosaccharides increase. I like to know the chemical reason behind this.

2. Aldehydes oxidize things more than Ketones. I know that this is due to the hyrdogen atom but how does that make aldehydes more reactive. Isn't oxygen in ketone a strong oxidizing agent?

3. What happens to monosaccharides in the presence of acid?

 

Thanks for the help :)

  • 2 weeks later...

About your question of alkalinity helps opening up of ring form, would it be possible to be related to deprotonation of hydroxyl group on C1 favoring cleavage of COC bond?

If this is a possibility, will acidic condition protonate hydroxyl group on C5, also favoring ring opening?

  • 2 weeks later...

very good reply

i agree with u

while the the cyclization of ring is opened

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