lecture 24 - Organic Lecture Series CH 310/318 M LECTURE 24...

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Organic Lecture Series 1 CH 310/318 M LECTURE 24 Textbook Assignment: Chapter 10- Alcohols Today’s Topics: Structure, Nomenclature and Properties Structure, Nomenclature and Properties Notice & Announcements: Topic Guide for XM3 emailed Organic Lecture Series 2 Alcohols Alcohols Chapter 10 Chapter 10
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Organic Lecture Series 3 Structure of Alcohols Structure of Alcohols • The functional group of an alcohol is an -OH group bonded to an sp 3 hybridized carbon. – Bond angles about the hydroxyl oxygen atom are approximately 109.5°. • Oxygen is sp 3 hybridized. –Two sp 3 hybrid orbitals form sigma bonds to a carbon and a hydrogen. – The remaining two sp 3 hybrid orbitals each contain an unshared pair of electrons. 108.9° O C H H H H Organic Lecture Series 4 • IUPAC names – The parent chain is the longest chain that contains the OH group. – Number the parent chain to give the OH group the lowest possible number. – Change the suffix -e to -ol ol. • Common names – Name the alkyl group bonded to oxygen followed by the word alcohol alcohol. Nomenclature of Alcohols Nomenclature of Alcohols
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Organic Lecture Series 5 1-Propanol (Propyl alcohol) 2-Propanol (Isopropyl alcohol) 1-Butanol (Butyl alcohol) OH 2-Butanol ( sec- Butyl alcohol) 2-M ethyl-1-propanol (Isobutyl alcohol) 2-M eth yl-2-p ropan ol (tert - Nomenclature of Alcohols Nomenclature of Alcohols Organic Lecture Series 6 • Compounds containing more than one OH group are named diols, triols, etc. CH 3 CHCH 2 HO OH 2 2 OH OH 2 2 HO HO OH 1,2-Ethanediol (Ethylene glycol) 1,2-Propanediol (Propylene glycol) 1,2,3-Propanetriol (Glycerol, Glycerine) Nomenclature of Alcohols Nomenclature of Alcohols
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Organic Lecture Series 7 • Alcohols are polar compounds.
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lecture 24 - Organic Lecture Series CH 310/318 M LECTURE 24...

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