Portland State University - - Professor Carl C. Wamser

Chemistry 331 - Fall 1997

Chapter 4 Practice

Addition Reactions

Predict the product expected from the following addition reactions:


Reaction Mechanisms

Draw electron arrows that indicate the flow of electrons in each reaction below.
Also indicate electrophiles and nucleophiles in each reaction.


Potential Energy Diagrams

The isomerization of cis-2-butene to trans-2-butene can be accomplished by heating, with

delta H = - 5 kcal/mole

Ea = 55 kcal/mole

Draw an approximate potential energy diagram for this reaction.

Draw an approximate potential energy diagram for the reverse reaction
(i.e., the isomerization of trans-2-butene to cis-2-butene).
What would be delta H and Ea ?


Reactions

complete a reaction given any two components:


Regioselectivity / Stereoselectivity

recognize those reactions that are regioselective (Markovnikov Rule)

recognize those reactions that are stereoselective (syn / anti)