ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL)
ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL)
4th Edition
ISBN: 9781119659587
Author: Klein
Publisher: WILEY
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Chapter 25.3, Problem 20CC
Interpretation Introduction

Interpretation:

For synthesis of glycine it is inappropriate to use chiral catalyst has to be explained.

Concept introduction:

Asymmetric catalytic hydrogenation is a reaction in which the alkene substrate is reduced to a saturated compound by addition of two atoms of hydrogen.  When chiral catalyst is used a enantioselective product is obtained.  This technique uses a chiral catalyst so that the amino acids can be prepared with high enantiomeric excess.

The final step after hydrogenation is the hydrolysis of the protected group of amine.  The general scheme can be shown as,

ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL), Chapter 25.3, Problem 20CC

To explain: why use of chiral catalyst is inappropriate for the synthesis of glycine.

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6. Consider the following exothermic reaction below. 2Cu2+(aq) +41 (aq)2Cul(s) + 12(aq) a. If Cul is added, there will be a shift left/shift right/no shift (circle one). b. If Cu2+ is added, there will be a shift left/shift right/no shift (circle one). c. If a solution of AgNO3 is added, there will be a shift left/shift right/no shift (circle one). d. If the solvent hexane (C6H14) is added, there will be a shift left/shift right/no shift (circle one). Hint: one of the reaction species is more soluble in hexane than in water. e. If the reaction is cooled, there will be a shift left/shift right/no shift (circle one). f. Which of the changes above will change the equilibrium constant, K?

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ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL)

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