CHO CHO -H- H- ČH3 CHO H- но- но- -H Br- -H -Br Br- -H- ČH3 CH3 Y (i) Determine the stereochemistry (R, S – configuration) of the chiral carbons of isomer X. (ii) Establish the relationship between isomer X and Y and between Z and X (i.e, which two are enantiomers and which two are diastereomers). Isomers X and Y are Isomers Z and X are (iii) If we assume isomer X rotates plane polarized light + 13.5° (i.e specific rotation of + 13.5"), what would be the specific rotation of isomer Y (its mirror image)? (iv) What then would be the specific rotation of a 1:1 mixture (racemic mixture of stereoisomers X and Y? I I

CHO CHO -H- H- ČH3 CHO H- но- но- -H Br- -H -Br Br- -H- ČH3 CH3 Y (i) Determine the stereochemistry (R, S – configuration) of the chiral carbons of isomer X. (ii) Establish the relationship between isomer X and Y and between Z and X (i.e, which two are enantiomers and which two are diastereomers). Isomers X and Y are Isomers Z and X are (iii) If we assume isomer X rotates plane polarized light + 13.5° (i.e specific rotation of + 13.5"), what would be the specific rotation of isomer Y (its mirror image)? (iv) What then would be the specific rotation of a 1:1 mixture (racemic mixture of stereoisomers X and Y? I I

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Answer all questions please.

CHO
CHO
-H-
H-
ČH3
CHO
H-
но-
но-
-H
Br-
-H
-Br
Br-
-H-
ČH3
CH3
Y
(i) Determine the stereochemistry (R, S – configuration) of the chiral carbons of isomer X.
(ii) Establish the relationship between isomer X and Y and between Z and X (i.e, which two are
enantiomers and which two are diastereomers).
Isomers X and Y are
Isomers Z and X are
(iii) If we assume isomer X rotates plane polarized light + 13.5° (i.e specific rotation of + 13.5"), what
would be the specific rotation of isomer Y (its mirror image)?
(iv) What then would be the specific rotation of a 1:1 mixture (racemic mixture of stereoisomers X
and Y?
I I

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