Step 3: If excess alcohol is present in the hemiacetal, the hemiacetal can be further converted to an acetal product, but only in the presence of acid. R₁ R2 R3OH, H+ HO R₁ X OR3 R3OH, H+ R30 OR3 + H₂O R₁ R₂ R₂ acetal hemiacetal Why is acid required? The alkoxy group in the hemiacetal must first be converted into a good leaving group. Acid stabilizes the product. Acid stabilizes the hemiacetal, making it more reactive. The hydroxy group in the hemiacetal must first be converted into a good leaving group.
Step 3: If excess alcohol is present in the hemiacetal, the hemiacetal can be further converted to an acetal product, but only in the presence of acid. R₁ R2 R3OH, H+ HO R₁ X OR3 R3OH, H+ R30 OR3 + H₂O R₁ R₂ R₂ acetal hemiacetal Why is acid required? The alkoxy group in the hemiacetal must first be converted into a good leaving group. Acid stabilizes the product. Acid stabilizes the hemiacetal, making it more reactive. The hydroxy group in the hemiacetal must first be converted into a good leaving group.
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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