how to convert Galactose to Ribose-5-phosphate?
why betaD glucose stabler than alphaD glucose in aquas solution?
why mutarotation proceeds slowly in heavy water?
how to explain that natural glucose belongs to D series of monosaccharide?
glucose+HIO4----> A , methylglucoside+HIO4----> B . why the products A and B are different ?( this question contains big number)
mutarotation of glucose is rapid in aqueous solution but it dosen't mutarotate in pyridine or in phenol alone --- why?
how to differentiate between erythrose & threose using reduction reaction?
which D-aldohexoses produce meso-aldaric acid when react with HNO3 ?
why do not methylglycosides do not react with fehling's solution & tollen's reagent and do not mutarotate?
glycerol+ HIO4----> ? (what is the product?)
what is Arndt-eistert reaction? (with example)
how to convert D-xylose to ascorbic acid(vitamin-C)?
raffinose-------(hydrolysis)------> ?
ascorbic acid+ diazomethane-----------> ?
dihydroxy acetone+HIO4>?
2006-11-13 01:39:56 · 1 answers · asked by sup 3 in Science & Mathematics ➔ Chemistry
"why betaD glucose stabler than alphaD glucose in aquas solution?"
beta conformation is more stable cuz more branching -OH groups are in equatorial positions than alaph conformation.
"why mutarotation proceeds slowly in heavy water?"
mutarotation need to open the ring first [same reason with why it dosen't mutarotate in pyridine or in phenol alone]
"how to differentiate between erythrose & threose using reduction reaction?"
reduce both erythrose and threose to alcohol. erythrose is optically inactive, threose is active.
"which D-aldohexoses produce meso-aldaric acid when react with HNO3 ?"
D- allose and D- galactose
"why do not methylglycosides do not react with fehling's solution & tollen's reagent and do not mutarotate?"
because you cant open methylglycosides chain to form the straight chain aldose back. Only aldehyde can react with tollen's agent.
2006-11-13 03:38:19 · answer #1 · answered by nickyTheKnight 3 · 2⤊ 0⤋