7. a) Identify all the chiral/stereogenic centres in the following molecules. Circle the chiral carbon(s). OH CI -Br CI ОН ČI Br A B OH HO .CI Br HO OH D b) For each chiral center, prioritize the groups (1-4) attached to each chiral center(s) Based on your priorities, assign R or S configurations to the chiral center(s). i) HO H,N° ii) H.. HO, Но OH H. iv) ÕH OH v) H,N-H

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Chapter1: Chemical Foundations
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7. a) Identify all the chiral/stereogenic centres in the following molecules. Circle the chiral
carbon(s).
OH
CI
-Br
CI
ОН
O,N
CI
Br
CI
CI
A
B
OH
HO,
.CI
Br
HO
OH
b) For each chiral center, prioritize the groups (1-4) attached to each chiral center(s)
Based on your priorities, assign R or S configurations to the chiral center(s).
i)
Но
ii)
H2N H
ОН
но
OH
iv)
OH
OH
v)
H,N-
ČH,OH
Draw the most stable chair conformation for each of the following cyclohexanes.
Now, "flip" the ring and redraw the molecule in the higher energy form.
i) chlorocyclohexane
ii) cis-1-chloro-2-methylcyclohexane
iii) trans-1-methyl-3-propylcyclohexane
Transcribed Image Text:7. a) Identify all the chiral/stereogenic centres in the following molecules. Circle the chiral carbon(s). OH CI -Br CI ОН O,N CI Br CI CI A B OH HO, .CI Br HO OH b) For each chiral center, prioritize the groups (1-4) attached to each chiral center(s) Based on your priorities, assign R or S configurations to the chiral center(s). i) Но ii) H2N H ОН но OH iv) OH OH v) H,N- ČH,OH Draw the most stable chair conformation for each of the following cyclohexanes. Now, "flip" the ring and redraw the molecule in the higher energy form. i) chlorocyclohexane ii) cis-1-chloro-2-methylcyclohexane iii) trans-1-methyl-3-propylcyclohexane
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