Exam 3: Alkenes and Alkynes: the Nature of Organic Reactions

Match each definition to one of the terms below. -The energy needed by reactants to reach the transition state.

Rank each set of substituents using the Cahn-Ingold-Prelog sequence rules by numbering the highest priority substituent 1 and numbering the lowest priority substituent 4. Place the number in the blank below the substituent.

Which of the following substituents has the highest priority according to the Cahn-Ingold-Prelog system?

Instructions: Draw structures corresponding to each name below. -Draw: trans-4,4-dimethylpent-2-ene

Instructions: Use the reaction energy diagram below to answer the following question(s). -The products are found at _____ on the diagram.

The structures below show the stepwise bond making and bond breaking in this reaction. Draw curved arrows to show the electron flow that has occurred in each step.

Instructions: Assign E or Z configurations to each alkene below. -Assign:

In an organic reaction, which of the following is most likely to function as only a nucleophile?

Instructions: Use the reaction energy diagram below to answer the following question(s). -The transition state is found at _____ on the diagram.

Instructions: Identify the functional groups present in each compound below, and predict the direction of polarity in each. -Identify and predict: amphetamine

Instructions: Consider the reaction of 2-bromo-2-methylpropane with water, shown below, to answer the following question(s). -Refer to instructions. This reaction is an example of:

Which of the following substituents has the highest priority according to the Cahn-Ingold-Prelog system?

Match each definition to one of the terms below. -Another term used for a Lewis acid.

Instructions: Use the reaction energy diagram below to answer the following question(s). -The reactants are found at _____ on the diagram.

Which of the following is a characteristic of a polar reaction?

Instructions: Provide names for each structure below. Be sure to include the cis,trans or E,Z designations where applicable. -Name and designate:

Instructions: Add curved arrows to the following reaction(s) to indicate the flow of electrons in each. -Indicate flow:

Instructions: Use the reaction energy diagram below to answer the following question(s). -The free-energy change for the reaction is indicated at _____ on the diagram.

Instructions: Classify each structure below as a nucleophile or electrophile, and briefly explain your choice. -Classify and explain: phenol

Below are all the chemical structures and intermediates involved in a reaction. On the structures provided, show all electron flow using the arrow formalism for the complete stepwise mechanism.