CHEM 233 Lecture Notes - Lecture 2: Methanol, Stereoisomerism, Hydrolysis
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Chem 233 worksheet 19: enols and acetals: (a) decide which side of the four equilibria below would be favoured in aqueous solution. Offer an explanation for this observation: below are some processes that do not work. Especially important is reaction (b): attempts to form acetals/ketals using basic (ph>7) conditions fail. Not to be used, copied or revised without explicit permission: write in the structures in boxes 1-6 from your bridge exercise. Using these structures as guides, use arrows to represent electron movement where appropriate to show mechanistic steps in this sequence. Not to be used, copied or revised without explicit permission. O: provide a mechanism for this process. The mechanistic steps are given on the worksheet. Note, these hints will not be provided on examinations. Oo: acid-base reaction, carbonyl addition reaction, proton transfer (acid-base, ionization (why is this ionization step so easy?, addition.
