Draw a structural formula of the R configuration of the compound shown below. CH3 HOCH2CH2CH2CHCHCH3 CH3 Use the wedge/hash bond tools to indicate stereochemistry where it exists. Include H atoms at chiral centers only. • If a group is achiral, do not use wedged or hashed bonds on it.
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Draw a structural formula of the R configuration of the compound shown below.
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- Shown below is Streptomycin, an antibiotic medication used to treat a number of bacterial infections, including tuberculosis, plague, and endocarditis. Neomycin B has broad-spectrum antibacterial activity. Circle and label as many functional groups in these molecules as you can. Label each chiral carbon in Streptomycin. How many total stereoisomers exist for Streptomycin? Label each chiral carbon in Neomycin B. How many total stereoisomers exist for Neomycin B?assign the stereochemical configuration of the selected tetrahedral carbon chiral centers (R, S or N (not a chiral center)) and the alkene (E, Z or N (not a stereocenter)) that are indicated by the arrows (note that you do not have to assign the configuration of every chiral center in the molecule). If the atom in question is not a chiral center or is not a stereocenter circle N for neither.Build 2‑bromoethan‑1‑ol and its mirror image. 2‑Bromoethan‑1‑ol, which has condensed structural formula BrCH2CH2OH, is also called 2‑bromoethanol. a. Draw the structures of 2‑bromoethan‑1‑ol and its mirror image using wedges and dashed wedges. b. How many stereocentres are present in 2‑bromoethan‑1‑ol? c. Are the molecules chiral? Do they contain planes of symmetry? Briefly explain the evidence for your answer.
- Are the following compounds chiral ? Determine the configuration if it is chiral and draw the enantiomer, for each structure.The following molecules are: Hint: Build models and relate structures or perform a configurational assignment for each asymmetric center. They are identical if they are both "S" configured. They are identical if they are both "R" configured. They are enantiomers if one is "R" configured and the other is "S" configured.Draw three-dimensional representations of the following compounds. Which have asymmetric carbon atoms? Which have no asymmetric carbons but are chiral anyway? Use your models for parts (a) through (d) and any others that seem unclear.1,3-dichloropropadiene
- Draw the optical isomers of CH3-CHOH-CHOH-CH3. Indicate the absolute configuration of each chiralcenter. From the drawn isomers, determine which are enantiomers and which are diastereomers, and identify if there are meso compounds. Please draw first the optical isomers before detemining.A) For a molecule with three chiral carbons the possible number of stereoisomers is: 4, 8, 6 or 2 B)Which of the following has a S configuration: (Image)Draw a three-dimensional structure of a chiral compound with the molecular formula of C4H4Cl2 that does not have a stereogenic carbon. In addition, draw the enantiomer of this compound.
- The original definition of meso is “an achiral compound that has chiral diastereomers.” Our working definition of meso is “an achiral compound that has chiral centers (usually asymmetric carbon atoms).” The working definition is much easier to apply because we don’t have to envision all possible chiral diastereomers of the compound. Still, the working definition is not quite as complete as the original definition. See if you can construct a double allene that is achiral, although it has chiral diastereomers, and is, therefore, a meso compound under the original definition. The allene structure is not a chiral center, but it can be a chiral axis.A 0.26 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.197° in a 1‑dm sample container. The molar mass of the compound is 132.3 g/mol. a. What is the specific rotation of D? b. What is the observed rotation if this solution is mixed with an equal volume of a solution that is 0.26 M in L, the enantiomer of D? c. What is the observed rotation if the solution of D is diluted with an equal volume of solvent?-Sketch the Fischer projection and make a model of each stereoisomer (R and S) of the alcohol 2-butanol, CH3CHOHCH2CH3. Also sketch the monosaccharide glyceraldehyde, HOCH2CHOHCHO. Prioritize the four groups attached to the stereocenter with 1 being the highest priority and 4 being the lowest priority.