N- HO H"* CH30. N. quinine (antimalarial drug)

Q: 1) Br2 (1 equiv) 2) Cl2 Nal (excess) H. Br. Br Br Br Br CI Br (+ enantiomer) CI Br H. (+ enantiomer)

A: In the presence of 1 eq. of Br2 alkyne produces trans dibromoalkene. Chlorine reacts with…

Q: Using Enantiomeric Excess to Calculate the Amount of Each Enantiomer If the enantiomeric excess is…

A: The equation of enantiomeric excess is given by  enantiomeric excess = (A - B) X 100 / (A+B)  where…

Q: Recall from Section 1.10B that there is restricted rotation around carboncarbon double bonds. Maleic…

A: Comparing the mp we can tell that the mp of the maleic acid is less than fumaric acid because it is…

Q: 3. What are the configurations (e.g., R or S) of the two stereogenic centers at the top and bottom…

A: The configurations R and S are mainly the nomenclatures given to stereogenic or carbon chiral…

Q: Chapter 2 [References] H3C HB CH3 На -CH3 CH3 H3C HO Cholestanol differs from cholesterol only in…

A: Given: structure  To find: Position of some groups Solution: There is number of ways to represent a…

Q: Explain why the enantiomers of 1,2-dimethylaziridine can be separated even though one of the…

A: Actually, tertiary amine compounds have pyramidal structure and they undergo very rapid flipping…

Q: 68. A reaction mixture is three parts of one enantiomer and one part of the other. What is the…

A: We have to calculate the % ee of mixture.

Q: 7.(a) Draw and label (i) the enantiomer and (ii) a pair of diasteromers of the following compound.…

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Q: a. Calculate the ee of a solution with the following [a] values: -50, –83, and -120. b. For each ee,…

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Q: Describe how a polarimeter can be used to solve the following two problems: a. Differentiate between…

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Q: 1. It measures how good chiral molecules are able to rotate plane, polarized light. A. Specific…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: The specific rotation for a pure enantiomer is known to be-45 g mL-1 dm-1. A sample containing both…

A: For this sample,  specific rotation [a] [a] = observed rotationconcentration ×length[a] =…

Q: Вос N- Si 1 >99% ee

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Q: How many total s bonds are there in Aflatoxin B1? How many p bonds are there in Aflatoxin B1? Label…

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Q: Recall from Section 1.10B that there is restricted rotation around carbon–carbon double bonds.…

A: Both Maleic acid and Fumaric acid have the same molecular formula but have different physical…

Q: The configuration for the enantiomer shown above is     a.    R     b.    S

A: To determine R/S configuration of chiral ( asymmetric) carbon , we use Cahn-Ingold-Prelog (CIP)…

Q: 12. Consider the molecule shown below. ОН ОН OH f. How many stereoisomers are possible? g. Draw each…

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Q: The following molecule A is drawn in such a way that its 3D structure is ambiguous. a. Circle the…

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Q: What is the ee for each of the following mixtures of enantiomers A and B?a. 95% A and 5% Bb. 85% A…

A: a. Enantiomeric excess gives how much excess of one enantiomer is present in racemic mixture.

Q: The [a] of pure quinine, an antimalarial drug, is -165. If a solution contains 82% quinine and 18%…

A: The observed optical rotation α can be found out using the formula,  ee=observed optical…

Q: 20. For each pair of compounds, determine whether they are enantiomers or diastereoisomers. b.

A: Enantiomers are non-superimpossable mirror images of each other and diastereomers are the non-mirror…

Q: Ephedrine, a stimulant and illegal drug is an optically active compound with two chiral centers. OH…

A: a. Chiral centre : atom with four different ligands are called chiral centre.  In the given compound…

Q: Dimethyl ether (CH,OCH) and ethanol (CH,CH,OH) are isomers, but CH,OCH, has a pka of 40 and CH,CH2OH…

A: Dimethyl ether and ethanol are isomers of each other. They have same molecular formula but different…

Q: Construct a model in which a tetrahedral carbon atom has four different colored model atoms attached…

A: Plane of symmetry: It is an imaginary plane which passes through the molecule and it divides the…

Q: If a mixture has an ee of 90%, what is the percentage of each enantiomer? Multiple Choice 80% : 20%…

A: Explanation: The enantiomeric excess (ee) shows how much more of one enantiomer is present in the…

Q: Rank the following compounds in increasing Amax- I. II. IV. N(CH3)2 N(CH3)2 + -N(CH3)3 -N(CH3)2 А.…

A: Conjugation increases the value of Lambda max by decreasing the energy of transition. So the correct…

Q: 7.(a) Draw and label (i) the enantiomer and (ii) a pair of diasteromers of the following compound.…

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Q: 2 A1.00 g sample of X and Y enantiomers has a % optical purity of 65.5. What is the mass % of each…

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Q: a）Name this molecule. Draw another stereoisomer, labelling each chiral atom with the proper…

A: Name : (1S,3S)-1,3-difluorocyclopentane. Another isomer is drawn ( see below). (1R, 3R) is the…

Q: ou came across an article debating the use of Prevacid® vs. Nexium®.  While both drugs have the same…

A: To define enantiomer? Give an example of enantiomers?

Q: a) Which structures are Enantiomers? b) Which structures are Diastereomers? c) Which structures are…

A: Enantiomers: These are the stereoisomers that form non-superimposable mirror images of each other.…

Q: 5. For the following: Answer I, II, III and/or IV ÇH3 ÇH3 ÇH3 ÇH3 но- -H- но- --H- H- HO- HO- но- -H…

A: Introduction: Enantiomers are the molecules that form a mirror image of each other. They are mirror…

Q: Are these chiral or achiral? Is the stereo enter R(D), S(L) or neither? Please state the full name…

A: This one is Chiral molecule because it has 4 different groups at its chiral center. The name Of the…

Q: the plan IS. CH3 -Br CH3 mirror plane Shown below is a representation of 2-bromobutane. a. Draw the…

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Q: Consider a mixture that is 38% (+) enantiomer and the rest is the (-) enantiomer. a) In which…

A: Given values : In a mixture of enantiomers : (+) enantiomer =38% (-) enantiomer = 62% specific…

Q: 3. A solution of enantiomers has an observed specific rotation of +8.0°ml/g dm and pure (+)…

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Q: Calculate the specific rotation for a compound A, whose observed rotation is 5.46º, which was…

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Q: NH my chloroquine CI NH LHO hydroxychloroquine You attempted to separate chloroquine and…

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Q: (b) (i) Using Fischer projection, draw all the stereoisomers of 3-chloro-2-hydroxypentanoic acid.…

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Q: QUESTION 8 You have a mixture that is composed of 29% of the (+) enantiomer and 71% the (-)…

A: The question is based on the concept of stereochemistry. We have to calculate enantiomeric  excess…

Q: A protein exists in a conformational equilibrium between a T conformation and an R conformation. See…

A: The dissociation constant value is used relatively in this case. The reaction with higher…

Q: Locate the stereogenic center in each compound and draw both enantiomers. a. b.- HO, Он с. HO, NH2

A: Stereogenic center is the carbon center which is responsible for the stereochemistry of compound. It…

Q: The [α] of pure quinine, an antimalarial drug, is −165.Calculate the ee of a solution with the…

A: The formula for enantiomer excess of a solution is calculated as follows: ee=αmixtureαPure…

Q: What is the relationship between stereoisomers and enantioners? Give a real life example?

A: The relationship between stereoisomers and enantiomers, which is to be accomplished.

Q: CH3 CH3 CH3 go Br H Br rotate H- H. Br 180 H- in H. Br Br Br H- plane [ HELPFUL HINT ] ČH3 Build…

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Q: Enantiomers 1. Construct a model with a tetrahedral carbon in the center and four different colored…

A: Here we have to explain the existence of plane of symmetry in the structure in which a terahedral…

Q: OH

A: The two homomorphic ligands are homotopic if they can interchange position by rotation around C2…

Q: Please determine the enantiomeric excess of a mixture, 68% of one enantiomer and 32% of the other…

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Q: Identify the correct Fischer, Haworth, and chair structure of the B-anomer of this compound: Сно H3C…

A: YZA PQR DEF

Q: What is the percent enantiomeric excess (ee) of a mixture that has 86% of one enantiomer and 14% of…

A: The percentage for one enantiomer = 86% The percentage for second enantiomers = 14%