CHEM 241 Study Guide - Midterm Guide: Protecting Group, Lithium Aluminium Hydride, Sodium Borohydride
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7 Dec 2018
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React aldehyde or ketone with ho(ch2)oh and h+ React protecting group with h3o+ to form a ketone. If protecting group has an h attached it will form an aldehyde after reacting. Adds oh and a cn group to where the carbonyl used to be. Adds r group and oh to where carbonyl was. Must add h2o in a separate step as grignard reagents are highly reactive to water and the reaction cannot occur if they are added in the same step. Reacting carbonyl with 1) lialh4 or nabh4 and 2)h2o. Adds an oh and an h to where carbonyl used to be. Reacting carbonyl with ch3oh and h+ (review mechanism) Adds 2 och3 groups where carbonyl was forms acetal. Contains one och3 group and one oh group where the carbonyl was. Can be made under acidic or basic conditions. Contains two och3 groups where the carbonyl was. Can only be made under acidic conditions.
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