Organic Chemistry III

Professor Carl C. Wamser

Chem 336 - Spring 2007

Chapter 21 Homework Answers

Carey, pages 937 - 941

Problems 21.12 - 28


1. Condensation reactions seem to have developed more "name" reactions than most other areas of organic chemistry. For each reaction below, identify the alpha-nucleophile and the carbonyl group that would have been involved.

a) Perkin condensation


b) Knoevenagel condensation


c) Dieckmann condensation


2. Write a complete mechanism for a mixed Claisen condensation between ethyl acetate and ethyl benzoate, using sodium ethoxide as the base.