Using HPLC with a non-polar stationary phase (C18) and isopropanol as mobile phase, predict the elution sequence for the following compounds: benzil, benzoin, and 1,2,3,4- tetraphenylnaphthalene. Rationalize your choice. 2. Why does the proton of the hydroxyl group in benzoin appears at d=6.1 ppm in DMSO-d6 while it shows at d=4.6 ppm in CDCl3? 3. In the Aldol reaction, why does the product precipitate during the reaction?

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Using HPLC with a non-polar stationary phase (C18) and isopropanol as mobile phase, predict the elution sequence for the following compounds: benzil, benzoin, and 1,2,3,4- tetraphenylnaphthalene. Rationalize your choice.

2. Why does the proton of the hydroxyl group in benzoin appears at d=6.1 ppm in DMSO-d6 while it shows at d=4.6 ppm in CDCl3?

3. In the Aldol reaction, why does the product precipitate during the reaction?

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