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Summary - org chem 101
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organic chemistry notes about (stereoisomerism)
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ISteviogeniscarbonatom steriogenictenter configuration arrangement ofgroups attatched to the
carbonatomwith y dietrentgroupsattached to it z
Howmanysteriogeniccentersare in thefollowingcompound
ÉF y stereogeniscarbon
Configuration a
ÉH 2 I 94 a b se
HO C H now
µ
oh stitchftp.chz ctiz anticlockwise
CHzOH in
d
Howmanysteriogenic carbons arefoundinthefollowing ched
Etd
III
a o bl 2 43 d 4 stg 2 check the leastpriority if its
a chacha cti on averticallineordashed
Howmanysteriogeniccarbon are in thestructure bellow animation an
line orwedgeyouswitchthe
a o bl I 4 2 d 3 configurat on
H th
ch
o
planeofsymmetry amirrorplane a verticallineawayfromviewer
y OH
t steviogenic
coots its a linethatcutsthestructure into carbon
Horizontalline
H C H two 3 theylookidentical grouptowardsthe chat
planeofsymmetry viewer
H c a
cook
n carbons R configuration
B
tf H
chiralmolecule object3 itsmirrorimageare non superimpossible
itdoesnthaveaplaneofsymmetry
example htt 3righthands shoes E Z conventions
Achiralmolecule object3 itsmirrorimageare superimpossible E convention If thetwohigherprioritygroups are on
it has a planeofsymmetry chsate
example two balls thehighpriorityareonoppositesideswhich
cH3b Bramakes it an E conversion
1 arrangethe atoms that areattached tothestereogenic 2 conversion If thetwohigherprioritygroups are on
carbondependingontheatomicnumber by Brb thesamesideof thedoublebond
1 thehighertheatomic 12g e thehighpriorityare on the sameside
go C H
I thehigherthepriority ya ya ya which make it a 2 convention
2 If youhavetwo ormoreofthedirectlyattachedatoms are
thesame workoutwardfromthesleviogenic centeruntil we s are apairofmoleculesthatare mirrorimages but
reach a difference nonsuperimpossible
NHz chachacha cuz H CathyCH C H
f R 35 configurations are enantiomers
theyareopticallyactive
3 if there are multiplebonds R configuration is an enantiomer of s configuration
Cyc c c c c i i ceo c o
d d id g
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