Summary Methods for Synthesis of Alkenes

Bredt s rule A stable bridged bicyclic compound cannot have a double bond at a bridgehead position unless one of the rings contains at least eight carbon atoms, (p. 295) bicyclic Containing two rings. 

Z Having the higher-priority groups on the same side of a double bond. 

Hofmann product The least highly substituted alkene product (p. 299) hydrogenation Addition of hydrogen to a molecule. The most common hydrogenation is the addition of H2 across a double bond in the presence of a catalyst catalytichydmgenation).Ths value of ( —A//°) for this reaction is called the heat of hydrogenation, (p. 290) 

Zaitsev s rule (Saytzeff s rule) An elimination usually gives the most stable alkene product, commonly the most substituted alkene. Zaitsev s rule does not always apply, especially with a bulky base or a bulky leaving group, (p. 291) 

Zaitsev elimination An elimination that gives the Zaitsev product Zaitsev product The most substituted alkene product 

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Alkene Synthesis by High-Temperature Industrial Methods 315 Problem-Solving Strategy Proposing Reaction Mechanisms 316 Summary Methods for Synthesis of Alkenes 320 EssentialTerms 322 Study Problems 323... 

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