Question

3. Indicate the relationship as enantiomers, diasteriomers or identical compounds in the space belom Two meso compounds should be identified as identical 2 pts. Each 6 pts. Total Note: Same substituents are on each chiral center 4. D-Flemsoaric acid has a specific rotation of +67". What is the enantiomeric excess and which isomer DorL will be in excess. If a mixture of D and L Flemsoaric acid has a specific rotation of -42°. Enantiomeric Excess = Name of isomer in excess _4pts. 5. A particular asymmetric induction furnished an enantiomeric excess of 80% favoring the S enantiomer of a one chiral centered compound. What are the percentages of the Risomer and the isomer in the crude mixture. % of Renantiomer_ 4pts. % of Senantiomer_ _4pts. 6. A particular asymmetric induction furnished a ratio of enantiomers of 65% to 35% favoring the S enantiomer. What is the enantiomeric excess of the Senantiomer. Enantiomeric Excess = 4pts. % of Racemic mixtures 4pts.

Answer 1

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00 of all the stereocenter changes its configuration, that type of combination is known as enantiomes. If not, these are called as diselenoisomers. Hence, it is diasteriomers. I CH3 HIC Both stereocentu change its configuration. Hence, Enantiomers (C) Hzc . as Both molecule in same, one center in R and another in 's' both molecule is uidentical 14 [Xo] pune it's just a syn enantiomeric Exces = [Xs) ows x 100 - X 100 = 62.687 quantily than Enantiomeric Excent When one somer is in major that of other in known as Enantiomenic Excen.

Specific rotaton of D- Flems odosic is +67° and specific rotation of mixture is -42°. It is very far away from specific rotation of D-Flemsoans. Hence excen isomer is L-Flemsacaric.