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chapter3-kh - 1 3. Organic Compounds: Alkanes and Their...

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Unformatted text preview: 1 3. Organic Compounds: Alkanes and Their Stereochemistry Based on McMurrys Organic Chemistry , 7 th edition Why this Chapter? Alkanes are relatively unreactive, but provide a useful vehicle to introduce important ideas about organic compounds 2 Alkanes will be used to discuss basic approaches to naming organic compounds We will take an initial look at 3-D aspects of molecules 3.1 Functional Groups Functional group- collection of atoms at a site that have a characteristic behavior in all molecules where it occurs 3 The group reacts in a typical way, generally independent of the rest of the molecule For example, the double bonds in simple and complex alkenes react with bromine in the same way Rxn of C=C bond with Bromine 4 2 Functional Groups with Multiple CarbonCarbon Bonds Alkenes have a C-C double bond Alkynes have a C-C triple bond Arenes have special 5 bonds that are represented as alternating single and double C-C bonds in a six- membered ring Functional Groups with Carbon Singly Bonded to an Electronegative Atom 6 Groups with a CarbonOxygen Double Bond (Carbonyl Groups) 7 Survey of Functional Groups 8 3 Survey of Functional Groups 9 Work Problem 3.1 here Prob. 3.1 Identify the functional groups in capsaicin O N O 10 H HO 3.2 Alkanes and Alkane Isomers Alkanes : Compounds with C-C single bonds and C-H bonds only (no functional groups) Connecting carbons can lead to large or small molecules The formula for an alkane with no rings in it must be C n H 2n+2 where the number of Cs is n 11 Alkanes are saturated with hydrogen (no more can be added They are also called aliphatic compounds Alkane Isomers CH 4 = methane, C 2 H 6 = ethane, C 3 H 8 = propane The molecular formula of an alkane with more than...
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This note was uploaded on 07/17/2011 for the course CHEM 227 taught by Professor Santander during the Spring '08 term at Texas A&M.

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chapter3-kh - 1 3. Organic Compounds: Alkanes and Their...

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