Chapter 17-1

Chapter 17-1 - CHEM 262 Wei You Chapter 17. Carboxylic...

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Unformatted text preview: CHEM 262 Wei You Chapter 17. Carboxylic Acids (1) • The functional group of a carboxylic acid is a carboxyl group – the general formula for an aliphatic carboxylic acid is RCOOH; that for an aromatic carboxylic acid is ArCOOH COOH CO 2 H O O H C O O H Alternative representations for a carboxyl group Structure • IUPAC names: drop the -e from the parent alkane and add the suffix -oic acid – if the compound contains a carbon-carbon double bond, change the infix-an- to -en- HCOOH CH 3 COOH 3-Methylbutanoic acid (Isovaleric acid) Ethanoic acid (Acetic acid) Methanoic acid (Formic acid) OH O Propenoic acid (Acrylic acid) trans- 3-Phenylpropenoic acid (Cinnamic acid) trans- 2-Butenoic acid (Crotonic acid) OH O OH O OH O Nomenclature - IUPAC – dicarboxylic acids: add the suffix -dioic acid to the name of the parent alkane containing two carboxyl groups HO OH O Propanedioic acid (Malonic acid) Ethanedioic acid (Oxalic acid) O HO OH O O Hexanedioic acid (Adipic acid) Pentanedioic acid (Glutaric acid) Butanedioic acid (Succinic acid) O OH O HO OH O HO O HO OH O O Nomenclature - IUPAC – if the carboxyl group is bonded to a ring, name the ring compound and add the suffix -carboxylic acid – Use numbers to show the location of substituents on aromatic...
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This note was uploaded on 06/12/2010 for the course CHEM 261 taught by Professor Austell during the Spring '08 term at UNC.

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Chapter 17-1 - CHEM 262 Wei You Chapter 17. Carboxylic...

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