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Ch 13 Carboxylic Acids, Esters, Amines and Amides

Ch 13 Carboxylic Acids, Esters, Amines and Amides. SWBAT: Name/Draw compounds with functional groups Describe/Explain properties of functional groups Complete/Show reactions of functional groups. Chapter 13.5 Amides. Amides in Everyday Life. Amides.

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Ch 13 Carboxylic Acids, Esters, Amines and Amides

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  1. Ch 13 Carboxylic Acids, Esters, Amines and Amides SWBAT: Name/Draw compounds with functional groups Describe/Explain properties of functional groups Complete/Show reactions of functional groups

  2. Chapter 13.5Amides

  3. Amides in Everyday Life

  4. Amides • Amides are made when an amino group (-NH2) replaces the hydroxyl group (-OH) of a carboxylic acid • Amide functional group is an internal group like an ester group

  5. ammonia ethanioc acid ethanamide ethanioc acid methylamine N-methylethanamide Formation of Amides

  6. Naming Amides (simple) • Carboxylic acid: replace–oic acid with –amide • Common names replaces –ic acid with –amide • An alkyl group attached to the Nitrogen of an amide adds the prefix N- followed by the alkyl name

  7. Subclasses of Amides 1o Amides: 2 H/no alkyl on amine part 2o Amides: 1 H/1 alkyl on amine part 3o Amides: no H/2 alkyls on amine part Draw: N-dimethylethanamide

  8. Physical Properties Melting Point • Highest for 1o amides (-NH2) can form 2 H-bonds • Lower in 2o amides (-NH) can form 1 H-bond • Lowest in 3o amides (no H) no H bond

  9. Physical Properties Solubility • All amides for hydrogen bonds with water – even 3o over carbonyl dipole • Amides with 1-5 carbons are soluble

  10. HCl HCl HCl + NH4+Cl- + NH4+Cl- + NH4+Cl- O-Na+ + NH2 CH3 NaOH Hydrolysis of Amides Acid hydrolysis of amides Acid hydrolysis of amides Acid hydrolysis of amides Produces carboxylic acid & ammonium salt Produces carboxylic acid & ammonium salt Base hydrolysis of amides Produces carboxylic salt & ammonia or amine

  11. Homework Chapter 13 Page 453 13.46 – 13.50 (even)

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