Advanced Organic Chemistry

Examenvragen

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28 januari 2013 NM

1. Explain the following reaction.
2. How is given cyclopropane synthesized from diethyl malonate in several steps? Choose reagents such that a maximal yield is obtained.
3. This reaction scheme is an example of a benzannelation reaction. Upon heating, several consecutive steps happen so that the given end product is obtained. Among these steps are three electrocyclic reactions (two 4-electron and one 6-electron), a tautomerization, and a cycloaddition (not necessarily in this order).
4. Explain formation of this product in presence of base.
5. Give product A and explain how this reaction occurs.
6. What products will be formed in following reactions?