Chem241a_Lecture_26

Chem241a_Lecture_26 - Organic Chemistry 241a Prof. Bogdan...

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Organic Ch emistry 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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Chapter 9: Stereochemistry • Assignment of stereochemical descriptors • Epimerization of biaryls • Special cases: chiral catenanes and in,out isomers Today we will cover: Reading Assignment: McMurry (the BOOK), Ch. 9.5-9.14
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Erythro and Threo Related to left/right direction of two groups of substituents: Same direction – Erythro , opposite – Threo Helical descriptors: M and P Related to direction of the twist: Counterclockwise – M , Clockwise – P Assignment of Stereochemical Descriptors
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Prochirality (Again!!) This term is used in different, sometimes contradictory ways; three are listed below. 1. The geometric property of an achiral object (or spatial arrangement of points or atoms) which is capable of becoming chiral in a single desymmetrization step. An achiral molecular entity, or a part of it
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Chem241a_Lecture_26 - Organic Chemistry 241a Prof. Bogdan...

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