Chapter 4-1

Chapter 4-1

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Unformatted text preview: ar arrow from connecting substituents 1Ð3 from highest to lowest priority. If the arrow moves clockwise, the sterocenter is labeled (R) [this stands for rectus]. If the arrow moves counterclockwise, then the stereocenter is labeled (S) [this stands for sinister]. 1 2 Pr Me 3 cl ockwi se Et H4 H Me 2 Me H Et Me 3 Pr H4 1 (S)-3-methyl hexane counter cl ockwi se (R)-3-methyl hexane The CIP System Revisited H3C CH3 CH3 H F H3C H CH3 O Br H3C H H CH3 HO CH3 CH3 The CIP System Revisited H3C C H3 CH3 4H 1 F C H3 H3 C 3 2 H3C H CH3 3 2 H3 C C H3 H3 C H4 1 2 3 1 F 4 H (R)-2-fluorobutane (S)-3-tert-butylcyclohexene 1 Br H3C 4 H H CH3 3 O 3 2 HO 1 CH3 4 CH3 2 (S)-4-bromo-2-methyl-1-pentene (R)-2-hydroxy-2-methyl-butanal Properties of Chiral Molecules Chiral objects can only be "recognized" as chiral by another chiral object O Carvone H O H Wh ic h is (S ) a n d wh ic h is (R )? [Yo u r n o s e c a n te ll!] O 3 H 4 1 (R) 1 ( S) Carvone 3 H 4 2 O 2 Properties of Chiral Molecules Chiral objects can only be "recognized" as chiral by another chiral object O Carvone H O H Wh ic h is (S ) a n d wh ic h is (R )? [Yo u r n o s e c a n te...
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This note was uploaded on 10/06/2010 for the course ES ES271 taught by Professor Machaut during the Spring '10 term at Colby.

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