(a)
Interpretation:
The configuration of the chiral center must be assigned to the substrate.
Concept Introduction :
The absolute configuration of a chiral center depends on the nature of substituents. The absolute configuration is determined using CIP (Cahn-Ingold-Prelog) priority rule according to which priority of a group is higher if the
(b)
Interpretation:
The configuration of the chiral center must be assigned in the product.
Concept Introduction :
The absolute configuration of a chiral center depends on the nature of substituents. The absolute configuration is determined using CIP (Cahn-Ingold-Prelog) priority rule according to which priority of a group is higher if atomic number is higher.
(c)
Interpretation:
Whether the given SN2 reaction proceeds with inversion of configuration must be explained.
Concept Introduction :
The SN2 reaction involves back side attack of the nucleophile which results in inversion of configuration.
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ORGANIC CHEMISTRY LL PRINT UPGRADE
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- III. Consider the compound below. H. F HO- HO -HO- (Atomic number: H-1, C-6, O-8, F-9) a. How many chiral centers are in the molecule? b. How many stereoisomers are there for the compound? c. Draw the Fischer projection for each of the stereoisomer and determine the absolute configuration (R or S). Label each using I, II, etc. d. Which pairs are enantiomers? Which are diastereomers?arrow_forward6. Which of the following is a meso compound? a. OH b. CI CH₂CH₁₂ OH- CI CH₂CH₂ C. d. H₂C "CH3arrow_forward1. Ketones react with sodium acetylide (the sodium salt of acetylene, Na“:C=CH) to give alcohols. For example: OH 2 H;0 a. Is the product chiral? b. Draw both major and minor reaction products, assuming that the reaction takes place preferentially from the Re face of the carbonyl group. Is the product mixture optically active? Explain.arrow_forward
- Which statement best describes the nature of the product(s) formed in this reac O A 1. Hg(OAc)2, H₂O 2. NaBH4 A. They are a pair of diastereomers. B. They are a pair of enantiomers. C. It is a single, achiral product. D. It is a single, chiral product. OD ? Question 34arrow_forward4. For each pair of molecules, assign the configuration at each chiral center as R or S. Give the relationship between the pair of molecules as no relation, constitutional isomers, same molecule but not meso, same molecule and meso, enantiomers, or diastereomers. There should only be one possible answer. a. OH OH b. Br Br с. NH2 NH2 NH2 NH2 d. HO НОarrow_forward5 6 How many stereoisomers of the following molecule are possible in principle? Attachments HO H₂C A. 8 B. 128 C. 64 D. 32 E. 16 CH3 HO What is the relationship between the following two compounds? Attachments HO OH OH moja moja A. They are diastereomers B. They are enantiomers ⒸC. They are mesomers D. None of the above NH₂ OHarrow_forward
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