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Alexandria University
Faculty of Engineering
Department of Chemical Engineering

CH211: Organic Chemistry 3
5th lecture
Fall 2017

CH211:Organic Chemistry 3
Dr. Iman El Gheriany

Identify the chiral carbon in
these compounds :

CH211:Organic Chemistry 3
Dr. Iman El Gheriany

TEST YOURSELF QUESTIONS
1-Write down the Fischer Projection of the product you get by the Kiliani-Fischer
synthesis of D-ribose?

CH211:Organic Chemistry 3
Dr. Iman El Gheriany

CH211:Organic Chemistry 3
Dr. Iman El Gheriany

HW #2 due next lecture
TEST YOURSELF QUESTION:
1-The Fischer Projection of four aldopentoses is given below.

i) Which of the shown monosaccharides is optically active?
ii) Is each of the shown aldopentoses a D or an L sugar?
iii) Draw each of the four given structures in your answer paper and draw the
enantiomer of each of them.
CH211:Organic Chemistry 3
Dr. Iman El Gheriany

Which of the eight D-aldohexoses yield
optically inactive (meso) aldaric acids on
oxidation?

CH211:Organic Chemistry 3
Dr. Iman El Gheriany

Which D-aldohexoses give the same ozasone ?

CH211:Organic Chemistry 3
Dr. Iman El Gheriany

What aldopentose would give a mixture of L-gulose
and L-idose on Kiliani-Fischer chain extension
SUPPLEMENT


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