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- How to separate a racemic mixture into its component enantiomers ?a)Draw all other stereoisomers of the molecule, labelling meso forms (if any), and assign descriptors to chiral carbon atoms. (b) Including molecule, label pairs of enantiomers and pairs of diastereomers. (c) If you were to distill a mixture of all the isomers, how many fractions could be obtained, and what would in each fraction?1. Consider the following compounds. Br Br Assign stereochemistry to all of the chiral centers in both of the molecules. Do they have the same melting point? Explain your answer. 2. How could you separate a racemic mixture into two enantiopure samples?
- This molecule: has 1 enantiomer is optically active is meso has an achiral diastereomer has a meso diastereomer has at least 1 diastereomer is unique: the only molecule with this connectivityHow many enantiomers are there in the molecule shown below?Are these enantiomers or the same compound? Please explain in detail.thanks
- Need help differentiating enantiomers,diastereomers,constitutional isomers and whether it is a same compoundWhich of the following molecules exhibits chirality?9. Which compound reacts with both NaBH and H/Pt to produce the same product? A) 1 4 2 B) II III CHO ||| D) None of these 10. Reduction of a carbonyl to produce a stereogenic center A) occurs with the formation of both diastereomers. B) occurs with the formation of both enantiomers. (C) occurs stereospecifically yielding a single isomeric product. D) none of these. MgBr 11. Which reagent would you use to produce (S)-1-phenylethanol from phenyl methyl ketone (acetophenone)? 12. A) S-CBS reagent B) R-CBS reagent C) NaBH +S-CBS reagent 4 D) NaBH + R-CBS reagent 4 An aldehyde can be produced by the reaction of the compound shown with which reagent? A) B) || D IV OCH3 I) H₁/Pt III) LiAlH4 II) NaBH4 IV) DIBAL-H 13. LiAlH reacts with which of the following? 4 A) | H .0 CI 0 EtO. 0 B) C) III D) All of these I II III
- When a new center of chirality is created, isomers can result. For the reaction below, specify the kinds of isomers that are produced and in what ratio they form. (For reactions you are not already familiar with, products are shown without stereochemistry.) Br2 The product(s) of this reaction is(are)Identify any chiral centers within the 2 molecules and identify whether each molecule is chiral or archial. If it is chiral, explain whether you expect a single enantiomer or a mixture of enantiomers to be formed.Which is a pair of enantiomers? Explain why.