Lect11_0914 - Example 1 Ch. 4 - 3 Example 1 (Contd)...

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Ch. 4 - 1 3B. 3B. Nomenclature of Branched Nomenclature of Branched - - Chain Chain Alkanes Alkanes : Rules : Rules 1. Use the longest continuous carbon chain as parent name 2. Use the lowest number of the substituent (sub) 3. Use the number obtained by Rule 2 to designate the location of the sub 4. # of substituents 2, use lowest sub # 5. The subs listed alphabetically 6. Two different subs on same carbon, designate twice 7. 2 subs identical, add prefixes which not used for alphabetical order 8. Two chains of equal length as parent chain, choose the greater # of subs 9. Branching occurs same for the two subs from either end, use the lowest # of sub of first point of difference 10. Name a complex substituent as though it were itself compound.
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Ch. 4 - 2
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Unformatted text preview: Example 1 Ch. 4 - 3 Example 1 (Contd) 6-carbon chain Find the longest chain as parent 8-carbon chain 8-carbon chain Ch. 4 - 4 Example 1 (Contd) Find the longest chain as parent 9-carbon chain (correct!) Nonane as parent Ch. 4 - 5 Example 1 (Contd) Use the lowest numbering for substituents 1 2 3 4 5 6 7 8 9 9 8 7 6 5 4 3 2 1 instead of (3,4,7) (3,6,7) Ch. 4 - 6 Example 1 (Contd) Substituents 3,7-dimethyl 4-ethyl 1 2 3 4 5 6 7 8 9 Ch. 4 - 7 Example 1 (Contd) Substituents in alphabetical order E thyl before di m ethyl (recall Rule 7 disregard di) Complete name 1 2 3 4 5 6 7 8 9 ( 4-Ethyl-3,7-dimethyl nonane )...
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Lect11_0914 - Example 1 Ch. 4 - 3 Example 1 (Contd)...

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