What products would result from the following processes?...

What products would result from the following processes? Write an equation for each reaction. a. 1-Butanol is heated to $140^{\circ} \mathrm{C}$ in the presence of sulfuric acid. b. 1-Butanol is subjected to an excess of oxidizing agent. c. 2-Pentanol is subjected to controlled oxidation. d. 2-Pentanol is heated to $180^{\circ} \mathrm{C}$ in the presence of sulfuric acid. e. 2-Methyl-2-pentanol is subjected to controlled oxidation.

What products would result from the following processes? Write an equation for each reaction.
a. 1-Butanol is heated to $140^{\circ} \mathrm{C}$ in the presence of sulfuric acid.
b. 1-Butanol is subjected to an excess of oxidizing agent.
c. 2-Pentanol is subjected to controlled oxidation.
d. 2-Pentanol is heated to $180^{\circ} \mathrm{C}$ in the presence of sulfuric acid.
e. 2-Methyl-2-pentanol is subjected to controlled oxidation.

Key Concepts

Oxidation Resistance of Tertiary Alcohols

Tertiary alcohols are resistant to oxidation under mild conditions because the carbon atom bearing the hydroxyl group does not have a hydrogen attached. Without an available hydrogen to be removed during the oxidation process, these compounds do not form carbonyl derivatives, making them inert to many standard oxidizing agents.

Oxidation of Secondary Alcohols

Secondary alcohols are typically oxidized to ketones under controlled oxidation conditions. This transformation involves the removal of two hydrogen atoms, one from the hydroxyl-bearing carbon and one from the oxygen, resulting in the formation of a carbonyl group. The process is generally straightforward because the carbon skeleton remains intact.

Oxidation of Primary Alcohols

Primary alcohols can be oxidized in a stepwise manner: first to an aldehyde and then, if excess oxidizing agent is present, further to a carboxylic acid. The reaction involves the removal of hydrogen atoms from the alcohol, and control over the reaction conditions (such as the amount of oxidant) determines whether the oxidation stops at the aldehyde stage or continues to form the acid.

Acid?Catalyzed Dehydration of Alcohols

This process involves the elimination of water from an alcohol in the presence of an acid catalyst to form an alkene. The mechanism typically involves protonation of the hydroxyl group, conversion into a better leaving group, and the subsequent loss of water to form a carbocation intermediate which then loses a proton to yield the alkene. The reaction often follows Zaitsev’s rule, favoring the formation of the more substituted, and therefore more stable, alkene.

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