1. The lab manual suggests an alternate strategy for the separation of aspirin from caffeine - that caffeine can be converted into a water-soluble salt by an acid extraction. Draw the structure of the caffeine salt that would form during this extraction. Use a generic acid HA. 2. Why was it important to add calcium chloride to the dichloromethane solution of caffeine? 3. [Refer to JoVE video on solid-liquid extraction] Describe how a Soxhlet extraction works. Why would one perform a Soxhlet extraction instead of standard solid-liquid extraction like the one you performed? What applications of Soxhlet extraction were described in the video? 4. Suppose that you carried out a reaction in aqueous medium and now need to extract your organic product, which probably already started to separate out as it formed, out of the reaction mixture. In which layer, top or bottom, would you expect the product to be if you add ether? What about if you add methylene chloride? Explain your answer.

1. The lab manual suggests an alternate strategy for the separation of aspirin from caffeine - that caffeine can be converted into a water-soluble salt by an acid extraction. Draw the structure of the caffeine salt that would form during this extraction. Use a generic acid HA. 2. Why was it important to add calcium chloride to the dichloromethane solution of caffeine? 3. [Refer to JoVE video on solid-liquid extraction] Describe how a Soxhlet extraction works. Why would one perform a Soxhlet extraction instead of standard solid-liquid extraction like the one you performed? What applications of Soxhlet extraction were described in the video? 4. Suppose that you carried out a reaction in aqueous medium and now need to extract your organic product, which probably already started to separate out as it formed, out of the reaction mixture. In which layer, top or bottom, would you expect the product to be if you add ether? What about if you add methylene chloride? Explain your answer.

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter39: Preparation Of An Α, Β-unsaturated Ketone Via Michael And Aldol Condensation Reactions

Section: Chapter Questions

Problem 2Q

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