
Which of the following sugars are ketohexoses? OH CH2OH OH HO CH2OH CH2OH OH OH OH CH20H OH OH OH HO HO OH 0 0 OH OH CH OH OH OH OH CH20H
Which of the following sugars are ketohexoses? OH CH2OH OH HO CH2OH CH2OH OH OH OH CH20H OH OH OH HO HO OH 0 0 OH OH CH OH OH OH OH CH20H
CH,OH H H2SO4 CHO
8. Use the image to answer the questions that follow HO-CH HO-CH2 HO-CH2 CHO H₂o OH CHO CHO OCH CHOICH CH-OH CHCc CHOICH CH 10 | | CH-CH HỒ CH-CH CH-CH CH-CH CH-CH но он но HO он но OH OH HO A B C D Do not e How many carbons does each of the above sugars contain? Name to E n ipo Which sugars are aldoses and which are ketoses? Identify each sugar. Name the linkage for each...
-UN cho HO HO OH Онст CH2OH он бн HO Loan Is -OH Br enant Same CH,OH (13) Rank the hydrogen atoms indicated with a letter in order of increasing ease of removal to form a carbocation (1 = easiest to remove, 3 = hardes to remove). Explain your ranking. (3 pts) I because there is Resonance нсъсн 2 becau& there is only one t to remove H-CH2-0-CH-CH3 I before doing Raphaule HH 3 because there are two Carber that...
complete the reactions
Br2, H2O CHO HO EH H-OH H-OH НО- CH2OH T ЕН O CNH2 1) Brą, NaOH, H20 O 2) (CH3)2CHCCI, pyridine
CHO HO+H PhNHNH2 H OH (3 equiv.) H-OH HO+H CH2OH
Count the number of sigma and pi bonds.
HO C-、-CH HO CH-CH2OH OH
CHO 1. NH2OH 2. Ac2o 3. CH,O CHO OH H- HO H HO H HCN H OH OH H- OH H- -OH H- CH2OH CH2OH The Wohl degradation is a series of reactions that shorten an aldose chain by one carbon, it is almost the exact opposite of the Kiliani In this reaction the aldose aldehyde carbonyl group is converted into a nitrile. The resulting cyanohydrin loses HCN under basic cone Conversion of the aldehyde to a nitrile is accomplished...
CHO H-C-OH H-C-OH H-C-OH CH, OH CHO 1 H-C-OH HO-c-H H-C-OH H-C-OH CH, OH CHO H-C-OH HO-C-H HO-º-H H-C-OH CH,OH CH,OH CEO HO-C-H H-C-OH H-C-OH CH,OH D A B с Which of the sugars in the figure above is an ketopentose? C B None of the choices are correct. D A
HNO3 Н- CHO HOTH -ОН H-OH HO+H CH2OH