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assignment1 - Chemistry 3250 Spring 2012 Assignment 1 Due...

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1 Chemistry 3250 Spring 2012 Assignment 1 Due: Tuesday, Jan. 24, 12:15 p.m. The following questions were contributed by Dr Peter Dibble and are written in his voice. Note that these are real questions that came up in the course of doing real research, so the answers are not always what you would expect for a typical assignment problem. There are several reasons why a synthetic chemist might do structure searches. I’ll give a few examples involving different search types. Most commonly, we are looking for preparations of compounds that we would like to use. For example, I was looking for a preparation of the following tetrabromopyrene in order that I might use it to prepare the pyrenodifuran shown: Br Br Br Br O O An exact search for the tetrabromide might not be successful, but a substructure search will yield at least one substituted example that is just as useful. The authors of the paper that described its synthesis came as a surprise to me.
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