Chem241a_Lecture_28 - Organic Chemistry 241a Prof. Bogdan...

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Organic Chemistry 241a Prof. Bogdan Olenyuk Contact Information Office: Old Chemistry 309 olenyuk@email.arizona.edu Phone: (520) 626-0754 Course web site: http://www.chem.arizona.edu/courseweb/074/CHEM241A1_2/FrameSet.html
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Chapters 9 & 10: Stereochemistry Alkyl Halides • Stereochemistry in reactions, part II • Alkyl halides – Preparation – Structure – Reactivity Today we will cover: Reading Assignment: McMurry (the BOOK), Ch. 9.6-9.14, 10.1-10.4
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Answer Assign R and S configurations. Then determine whether the structures in each of the following pairs are enantiomers or identical. 1 2 4 3 4 2 3 1 S S identical R S enantiomers CH 3 HB r 2 3 H CH 3 CH 2 CH 3 Br CH O OH H CH 2 OH CH HO H CH 2 OH O CO 2 - H + H 3 N CH 3 CH 3 CO 2 - H + H 3 N CH 3 HO H CH 2 CH 3 H CH 3 OH CH 3 CH 2 3 1 2 14 2 3 4 S R enantiomers S R enantiomers Fischer Projections
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Compounds Containing Two or More Chiral Centers Question. Draw all stereoisomers of 2-bromo-3- chloropentane. Indicate R and S configurations of each stereogenic center. Give the relationships between each pair of stereoisomers.
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Compounds Containing Two or More Chiral Centers Answer. Be systematic. Draw one stereoisomer. Then draw its mirror image. Then change one chiral center and draw its mirror image.
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Chem241a_Lecture_28 - Organic Chemistry 241a Prof. Bogdan...

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