12 - CH 310M/318M TTh 8am Lecture 12 Th Reading Assignment...

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CH 310M/318M – TTh 8am – Lecture 12 – Th 2/21/2008 Graded Homework : HW#06 deadline = 3:00 p.m. TODAY HW#07 deadline = 3:00 p.m. on Mon 2/25 HW#08 deadline = 3:00 p.m. on Thu 2/28 Reading Assignment : Sections 4.1 through 4.4 Textbook Problems : 3.25-3.28, 3.30-3.32 Last Time : Enantiomers, chirality, chiral centers, stereocenters Properties of enantiomers Today : Optical activity Assigning ( R )/( S ) designations to chiral centers Molecules with more than 1 chiral center – diastereomers Please refer to the “Exam Pickup & Regrade Policies” handout for instructions regarding how to pick up your graded exam (if you have not already done so), and how to submit a regrade request. Deadline to submit all Midterm Exam #1 regrade requests is Tue., 2/26 @ 12:00 p.m.
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Assigning R,S Stereochemical Designations This system is based on the Cahn–Ingold–Prelog priority rules. These rules are used to assign relative priorities to the four different groups attached to a chiral center.
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