What is the difference between an aldose and a ketose?
2016年1月23日 · An aldose contains an aldehyde group; a ketose contains a ketone group, The ending -ose tells you that both aldoses and ketoses are carbohydrates. Carbohydrates are just polyhydroxyaldehydes (aldoses) or polyhydroxyketones (ketoses). So, for a carbohydrate to be an aldose it needs an aldehyde group and, to be a ketose, it needs a ketone group. In the …
How can I convert the bond line view of L-idose to a Fischer
2014年12月14日 · A bond-line view gives no stereochemical information, so all 16 hexoses have the same bond line structure. But each hexose has its own wedge-dash structure. Here are the steps to convert it to a Fischer projection. Draw the wedge-dash structure of the aldose. Draw a vertical line with C-1 (the aldehyde group) at the top and C-6 (the CH₂OH group) at the …
How do you number carbons in ketoses? - Socratic
2018年1月25日 · More or less the same as Aldoses.. The biochemical class of compounds known as Sugars can roughly be divided in two categories: Aldoses and Ketoses. They typically contain between 3 and 7 Carbon atoms: 3:rarr Trioses 4:rarr Tetroses 5:rarr Pentoses 6:rarr Hexoses 7:rarr Heptoses 7 seems to be the maximum: there are no (known) sugars containing 8 or …
What is another name for an aldose that contains 6 carbons
2015年10月14日 · A hexose, which is generically a sugar that had six carbons in its straight-chained form. Simply put, "ose" is the suffix for a sugar, and "hex" is the prefix for six. A hexose originally has 6 carbons as a straight-chained molecule, and after being put into water, it rapidly interconverts in an equilibrium between its straight-chained form and its cyclic form. An aldose …
What is the relationship between D-glucose and D-fructose?
2015年11月9日 · I am not sure what you are asking, but D-glucose and D-fructose are constitutional isomers. > The structures of D-fructose and D-glucose are They each have the same molecular formula, "C"_6"H"_12"O"_6. But D-fructose has a primary alcohol at "C-1" and a ketone at "C-2". And D-glucose has an aldehyde at "C-1" and a secondary alcohol at "C-2". …
How can I find chiral centers in ring structures? | Socratic
2014年12月15日 · Here's one way to do it. > Assume that you have to find the chiral centres in 3-aminocyclohexanol. (Adapted from Sigma-Aldrich) Here are the steps to find the chiral centres. Step 1: Ignore all atoms that cannot be chiral centres. These include "CH"_2, "CH"_3, and "NH"_2 groups, oxygens, halogens, and any atom that is part of a double or triple bond. That …
Aldohexoses have 4 chiral centers, or 16 (24) stereoisomers
2014年12月24日 · Yes, there are 16 individual sugar names. > An aldohexose has four chiral centres. So there are 2^4 = 16 optical isomers. The 8 D-aldohexoses are shown below. (From sandwalk.blogspot.com) Their mirror images are the L-aldohexoses, the other 8 of the 16. Their names are L-allose, L-altrose, L-glucose, etc. Hence, each of the 16 aldohexoses has its own …
What functional groups are in glucose? - Socratic
2014年7月7日 · Glucose contains aldehyde, alcohol, and hemiacetal groups. Glucose exists in a straight-chain form and in various cyclic forms. In the straight-chain form, the functional group at C-1 is an aldehyde group. The functional groups on C-2 to C-6 are alcohol groups. In the cyclic form, the functional group on C-1 is a hemiacetal group. A hemiacetal has an OH and an OR …
How do you calculate how many stereoisomers a compound has?
2015年11月25日 · Since for every atom that can exist in more than one configuration, you have R or S (#sp^3#), or E or Z (#sp^2#), you have two configurations for each of those atoms.
How does "iodic acid", HIO_3, react with iodide anion, I^-, to give ...
2017年3月4日 · This is a so-called "comproportionation reaction". "Iodic acid" is reduced to elemental iodine: HI^(+V)O_3 + 5H^(+)+5e^(-) rarr 1/2I_2 +3H_2O (i) "Iodide" is oxidized to elemental iodine: I^(-) rarr 1/2I_2+e^(-) (ii) So (i)+5xx(ii)= HI^(+V)O_3 + 5H^(+)+5I^(-) rarr 3I_2 +3H_2O This is AFAIK balanced with respect to mass and charge, and therefore a reasonable …