Chemistry 30A3 Fall 2011 Labs Dr. Troendle 21

Chemistry 30A3 Fall 2011 Labs Dr. Troendle 21 - properly...

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Chemical Biology 3OA3, September 2009 Page 21 Experiments Work in an organic chemistry laboratory falls generally into one of two categories: preparative (synthesis) and physical organic experiments. (A) Organic Preparations: Preparative work usually involves 3 steps: 1. Performing the reaction; 2. Isolation and separation of the product; and 3. Establishing the identity and purity of the product (characterization). The first experiment involves steps 2 and 3: caffeine in tea leaves is separated and characterized. You will then perform some one or two step reactions, and then perform the preparation of a peptide by chemical synthesis. The later sequences involve several steps, and it is important that you take great care with the early steps, since if these are not done
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Unformatted text preview: properly the later steps will also fail. In this course, the structure of the products will be compared by spectroscopy. (B) Physical Organic Experiments Physical organic chemists measure properties of molecules; for example, the rate of a chemical reaction may be correlated with the structures of a range of similar starting materials to gain insight into the reaction mechanism. In this course, you will investigate various physical effects, such as the anomeric effect (Lab 2), which are relevant to enzyme catalysis, as we will see in class; and the effect of substituents on the rate of the enzyme orange peel esterase (Lab 7)....
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