chm228 exam3

chm228 exam3 - CHAPTER 18 Reactants Nucleophile Product...

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CHAPTER 18 Reactants Nucleophil e Product Comments 18.2 — Reaction with NaBH 4 or LiAlH 4 proceeds to stage one and follows the basic conditions mechanism 18.3 — This reaction proceeds to stage 1. Hydrates usually cannot be isolated because of the unfavorable equilibrium. The reaction follows either the acidic or basic conditions mechanism. 18.4 — This reaction proceeds to stage 1 and follows the basic conditions mechanism. 18.6 — Reaction with organo-metallic nucleophiles (Grignard reagents and organo- lithium reagents) proceeds to stage 1 and follows the basic conditions mechanism. 18.7 — The Wittig reaction proceeds to stage 2 and follows the basic conditions mechanism. 18.8 — Imine formation proceeds to stage 2 with primary amines. Addition follows the basic conditions mechanism, but acid is needed to remove the oxygen. Secondary amines give enamines. 18.9 — Acetals are formed at stage 3. Thiols react in a very similar manner. The unfavorable equilibrium must be driven to
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This note was uploaded on 05/04/2008 for the course CHM 228 taught by Professor Rosen during the Spring '08 term at Rhode Island.

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chm228 exam3 - CHAPTER 18 Reactants Nucleophile Product...

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