D-glucose exists as two epimeric cyclic hemiacetals: a-D-glucopyranose (left, labeled hydroxy group is in the axial position) and B-D-glucopyranose (right, the labeled hydroxy group is in equatorial position). The two anomers equilibrate via the open aldehyde form. Draw the curved arrows to show the complete reaction mechanism for the conversion of one anomer to the other under acidic catalysis. HOH HOH Ho HO HO HO HO- H H HO- OH!-- H H OH H OHI H

Q: The following isomerization reaction, drawn using D-glucose as starting material, occurs with all…

A: The first step is the abstraction of proton from the carbon atom of aldehyde group to form enolate.…

Q: 12. (10 pts) Under the right conditions radical bromination of A produces compound B as shown below…

A: This given reaction is radical bromination .( Also called as allylic bromination ) In this reaction…

Q: Draw the major product(s) for reaction of methyl pentanoate with: (2) Me2CHCH2CH2OH, H3O*

A: Transesterification: The process of exchanging an alkyl group (R) of an ester with the alkyl group…

Q: All the glucose units in dextran have six-membered rings. When a sample of dextran is treated with…

A: Dextran have a linear backbone of α-linked D-glucopyranosyl repeating units. Sugar molecule that has…

Q: Draw α-l-tagatopyranose :

A: α-l-tagatopyranose molecular formula is C6H12O6.

Q: Hyaluronic acid, a component of connective tissue, is the fluid that lubricates joints. It is a…

A: The general structure of hyaluronic acid is as follows,

Q: Draw a stepwise mechanism for the acid-catalyzed interconversion of two glucose anomers by…

A: Solution :    Glucose has two anomers on the basis of orientation of the -OH group at the C-1 of…

Q: fill in with reagent/products

A: According to the Fischer Projection, every stereocenter looks like a cross. While the vertical line…

Q: Draw the mechanism by which it is possible to go from an open structure to a cyclic one, in the form…

A: Pyranose and furanose are cyclic forms of sugar. Pyranose is six member sugar and  furanose is five…

Q: Draw the organic products formed in the following reaction.

A: The first step is the reaction of given mixture of enantiomers of amino acid with acetic anhydride…

Q: Your answer is partially correct. The enediol tautomerizes to a ketose sugar before the next…

A: Step 1: Step 2: Step 3: Step 4:

Q: (a) Locate the stereogenic centers in the ball-and-stick model of ezetimibe (trade name Zetia), a…

A: Chirality is the phenomenon in which the mirror images are non superimposable with each other.…

Q: Draw the following sugar derivatives. ) 2,3,4,6-tetra-O-methyl-d-mannopyranose(

A: The given sugar derivatives can be drawn as  2,3,4,6-tetra-O-methyl-d-mannopyranose

Q: The attached isomerization reaction, drawn using D-glucose as startingmaterial, occurs with all…

A: The first step is the abstraction of proton from the carbon atom of aldehyde group to form enolate.…

Q: rehalose is a disaccharide that can be obtained from fungi, sea urchins and insects. Acid hydrolysis…

A: The compound trehalose is types of the disaccharide that is not the reducing sugar. They are…

Q: Aldotetroses exist in the furanose form. Draw both anomers of D-erythrose.

A:

Q: Draw the most stable chair conformation of β-D-galactopyranose. Name and draw the major product that…

A: We have to draw the most stable chair conformer of β-D-galactopyranose.

Q: chloride

A: Dear student this question is related to organic chemistry.

Q: Treatment of either anomer of fructose with excess ethanol in the presence of a trace ofHCl gives a…

A: Epimers are the stereoisomers in which the configuration differs at only one stereogenic center.…

Q: (a) Label compounds A, B, and C as D- or L-sugars. (b) How are compounds A and B related? A and C? B…

A: a) A D-sugar is defined as when the in the 5 carbon structure when the OH of the fourth carbon is at…

Q: reaction occurs in sugars also. H. H OH H, H-C-OH Oxidizing agent OH OH C=0 H-C-OH H-C-OH R OH R R…

A:

Q: Using the provided table, determine the enthalpy for the reaction 2 NH, (g) + 3 N,O (g)→ 4 N, (g) +…

A: Given: 2NH3(g)+3N2O(g)→4N2(g)+3H2O(l)∆Ho(NH3)=-46.2 kJ/mol∆Ho(N2O)=81.6 kJ/mol∆Ho(N2)=0…

Q: Draw the structure of the stereoisomer of ephedrine where its two stereogenic centers are of R…

A: Given compound is ephedrine. R configuration means clockwise rotating arrow from group of higher…

Q: Draw the product of each reaction.

A: The epoxide can be easily opened up by treating with a different reagent as it is a strained ring.…

Q: Which structure below shows the chair conformation of β-D-glucopyranose? The Fischer projection of…

A: The structure is drawn below.

Q: Aldotetroses exist in the furanose form. Draw both anomers of D-erythrose.

A: Anomers:Anomers are cyclic sugars differing in configuration only at hemiketal (at C-2) and…

Q: What is the sugar classified as - ketopentose - aldohexose - aldopentose - ketohexose

A: ketopentose - sugar contains five carbons with ketone functional group.  ketohexose sugar contains…

Q: Draw all products, including stereoisomers, in attached reaction.

A: The given alkyl halide is (R)-2-chlorohexane. It is a secondary alkyl halide. Hydroxide ion acts as…

Q: 0 0 CH3COCCH3 об H HO OH ОН H₂C=CHCH₂CCH3 CH3CCH₂CH₂ CH3 Е O

A: Aldehydes are oxidised by Tollens reagent to acids. Ketones do not react with Tollens reagent. To…

Q: N. N- O= Which box contains a carbocyclic unsaturation? B IZ

A: RCOOH group is called carboxylic group.