Total number of stereoisomers possible for the following compounds is HINT: OH OH HO How many possible stereoisomers?

Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
Chapter6: Alkanes & Alkenes
Section: Chapter Questions
Problem 4E: Consider the molecule 1-bromo-2-methylbutane. C3 and C4 should be drawn as Et as in theexample. This...
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Total number of stereoisomers possible for the following
compounds is
HINT:
a. 4
How many possible stereoisomers?
How do we know how many stereoisomers are possible for a given structure? There is actually a straightforward way to figure this out. All we need to do is
count the number of chiral centers and stereogenic alkene groups, the use this following rule:
number of stereoisomeric forms = 2"
... where n = the number of chiral centers plus the number of stereogenic alkene groups
b. 2
Consider for example a molecule with two chiral centers and one stereogenic alkene. By the rule stated above, we know right away that there must be eight
possible stereoisomers.
terminal alkene
OH
stereogenic alkene
C. 8
OH
d. 3
OH
chiral center
HO
OH
3
2 = 8
T
nonstereogenic alkenes (cannot be labelled E or Z)
←
Transcribed Image Text:Total number of stereoisomers possible for the following compounds is HINT: a. 4 How many possible stereoisomers? How do we know how many stereoisomers are possible for a given structure? There is actually a straightforward way to figure this out. All we need to do is count the number of chiral centers and stereogenic alkene groups, the use this following rule: number of stereoisomeric forms = 2" ... where n = the number of chiral centers plus the number of stereogenic alkene groups b. 2 Consider for example a molecule with two chiral centers and one stereogenic alkene. By the rule stated above, we know right away that there must be eight possible stereoisomers. terminal alkene OH stereogenic alkene C. 8 OH d. 3 OH chiral center HO OH 3 2 = 8 T nonstereogenic alkenes (cannot be labelled E or Z) ←
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