Concept explainers
Interpretation:
For the below compound the chirality centers has to be labeled and number of chiral centers should be determined.
Concept introduction:
Chirality center:
When a carbon atom is bonded to four different groups, then that carbon is named as chiral carbon and it is called as chirality center. Generally, the carbon atom contains tetrahedral valency, therefore it bonded to four atoms or molecules. The chiral center is bonded with four different elements or groups. If the single carbon atom is bonded to two or more identical group or atom, then it is also not considered as chiral carbon. In addition to this, if the carbon atom contains multiple bond then it does not able to bond with four different groups then it is not considered to be as a chirality center.
Want to see the full answer?
Check out a sample textbook solutionChapter 12 Solutions
Connect 1-Semester Online Access for Principles of General, Organic & Biochemistry
- Propose structural formulas for the following polysaccharides. Q.) Alginic acid, isolated from seaweed, is used as a thickening agent in ice cream and other foods. Alginic acid is a polymer of d-mannuronic acid in the pyranose form joined by b-1,4-glycosidic bonds.arrow_forwardThe structure below is aarrow_forwardOne of the analgesics has a chiral center. Which compound is it? One of the two enantiomers is far more effective at reducing pain than the other.arrow_forward
- Cellobiose, a disaccharide obtained by the hydrolysis of cellulose, is composed of two glucose units joined together in a 1→4-β-glycoside bond. What is the structure of cellobiose?arrow_forwardA reddish color is obtained when compound A (a disaccharide) is reacted with Benedict solution. Is this compound more likely maltose or sucrosearrow_forwardHow many chiral centers are in B-d-glucopyranose and a-D-galactopyranose? How many stereoisomers of these two aldohexoses can theoretically be drawn?arrow_forward
- 4. ) Determine if the following compound is chiral or not. OH HO OH Me ZOH Ме HO HO OH F. CI Ме CI Он Me JCHO CI Br Br CI CH3arrow_forwardLactose is a disaccharide composed of a 1-4 glycosidic bondbetween galactose and glucose.A) Is lactose a reducing sugar? B) Label the glucose and galactose rings on the lactose structure to theright. C) Circle the anomeric positions. Circle oneThe anomeric position of the acetal is Alpha BetaThe anomeric position of the hemiacetal is Alpha BetaD) What is the relationship between glucose and galactose? E) Give a specific acid mechanism hydrolyzing lactose into glucoseand galactose. Show lone pairs on the oxygen atoms directly involved in each step, show formal charges, correctly use arrows, and do not skip steps.arrow_forward(d) Draw the structure of the expected product when monosaccharide B undergo mutarotation upon dissolving in water in the presence of Tollens reagent (AGNO3, NHẠOH). он OH O. OH OH OH monosaccharide Barrow_forward
- Monosaccharides can be drawn in a variety of ways, and in truth, often a mixture of cyclic compounds is present in a solution. Identify each monosaccharide, including its proper D,L designation, drawn in a less-than-typical fashion.arrow_forward9 A disaccharide consists of the molecules of D-glucose and D-glucosamine joined by a (1a, 1b)-glucosidic bond. a) Draw the structure of the disaccharide (Haworth projection) if you know that in D- glucose the anomeric carbon has an a-configuration. b) Give the name of the union you drew in question a. c) Draw the structure of the product (cantilever conformation) resulting from the effect of excess acetic anhydride and pyridine on the disaccharide. Hint: D-glucosamine has the same structure as D-glucose, but C-2 has an amino group instead of a hydroxyl.arrow_forwardNumber of chiral center and stereocenters of the product formedarrow_forward
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage LearningMacroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks ColeIntroduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning