This tutorial covers reversible nucleophilic addition reactions to ketones and aldehydes. Specifically, the video presents the reactions of oxygen and sulfur nucleophiles on the carbonyl carbon of ketones and aldehydes to form hemiacetals and acetals, or hemithioacetals and thioacetals in the case of sulfur. (Runtime = 19:21)
Student Learning Outcomes
After viewing this tutorial and practicing problems from this website and your textbook, you should be able to:
• Identify acetals, ketals, hemiacetals, and hemiketals functional group.
• Draw the mechanism for reversible nucleophilic addition reactions of ketones and aldehydes with oxygen nucleophiles.
• Predict the major and minor products of reversible nucleophilic addition reactions of ketones and aldehydes with oxygen nucleophiles.
Practice Problems
Here are some problems to get you started. You should first try each on a piece of paper. Then, place your cursor over the graphic and click on right arrow that appears to see the answer. The right and left arrows allow you to move back and forth between problems. Please note that these are not the only types of problems/questions that exist on this topic. Refer to your textbook and any problems your instructor provides you for more practice with this subject.
