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Summary from Organic Chemistry Packet:
Introduction to organic chemistry
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1. Nomenclature based on alkanes
Know alkanes for C1-C10 Recognize the formula/name of Alkenes (double bond) Alkynes (triple bond) Cycloalkanes (ring structure) Ex: Write the chemical formula and structural formula for: Octane 2- Butyne 1, 3- Heptadiene
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Hydrocarbons Compounds of C and H and often a third or more additional elements Subgroups: Alkanes: Containing only C-C single bonds Alkenes: C=C double bonds as well as single bonds Alkynes: carbon-carbon triple bonds as well as single bonds. Aromatic: hydrocarbons containing benzene rings.
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2. Branched alkanes and isomers
Understand the basic rules for writing & naming branched alkanes. Recognize and name structural isomers Ex: Name the following molecules:
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Hydrocarbons & Structural Isomerism
Isomers of C5H12 C5H12 has 3 structural isomers. C6H14 has 5 C7H14 has 9 And so on
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How many isomers can you draw for heptane?
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Alkenes: Compounds with C=C Double Bonds
Result of loss of free rotation about the C=C brings about “Geometric Isomers” Increase in reactivity over alkanes X-Y addition reactions are possible X2, H2, HX and H2O can add across the double bond.
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Geometric (stereo) Isomers:
Recognize the terms cis-, trans- isomers Unsaturated molecules Orientation around the double bond
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Naming Alkenes: cis & trans
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Alkynes Alkynes have carbon-carbon triple bonds.
C2H2: common name = acetylene systematic name = ethyne Preparation: CaC2(s) + 2H2O(l) C2H2 (g) + Ca(OH)2(s)
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Aromatic compounds Benzene, C6H6, is a key molecule in chemistry.
It is the simplest aromatic compound, a class of compounds so named because they have significant, and usually not unpleasant, odors.
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Functional Groups: Recognize functional groups
Name compounds based on functional groups
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Organic chemistry & reactions
Be familiar with some basic properties of an organic reaction: Combustion (know this for sure!) Condensation (H2O removed) Addition ( of a halogen to an unsaturated alkane) Substitution (of a halide)
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