1C_Lecture_23

1C_Lecture_23 - Functional Groups 1 Chapter 21: Organic and...

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Chapter 21: Organic and Biochemical Molecules Functional Groups 1
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Chapter 21: Organic and Biochemical Molecules Alcohols Functional Groups 2 H-Bonding occurs for alcohols Increases boiling point and melting point from the alkanes More soluble in water Amphoteric, but better acid than a base Primary Alcohol Secondary Alcohol Tertiary Alcohol Note: When the alcohol is functioning as an acid, the hydrogen bonded to the oxygen dissociates. When the alcohol is functioning as a base, a hydrogen bonds to the lone pair of electrons on the oxygen Acidic Basic
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Chapter 21: Organic and Biochemical Molecules Rules for Naming Alcohols:-OH Functional Groups 3 1. The root name is formed by taking the alkane name corresponding to the number of carbons that the alcohol is bonded to, and replacing the e with -ol 2. If multiple alcohols are present the e is kept on the alkane name and the following is inserted between the alkane name and -ol: Example: Root Name: octanol Example: octanediol # of -OH Name 2 di 3 tri 4 tetra
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21: Organic and Biochemical Molecules Rules for Naming Alcohols:-OH Functional Groups 4 3. If the only functional group that is present is the alcohol, the root carbons are number ed such that the alcohol is bonded to the lowest numbered carbon. The number of the carbon that the alcohol is bonded to, is placed in front of the root name. 4. Follow the remaining rules for naming alkanes and cycloalkanes. Example:
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This note was uploaded on 09/09/2011 for the course CHEM 1C taught by Professor Hooker during the Spring '06 term at UCSB.

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1C_Lecture_23 - Functional Groups 1 Chapter 21: Organic and...

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