Exam 19: More About Amines - Reactions of Heterocylic Compounds

Draw the structure of a porphyrin ring system,and list three common,naturally-occurring molecules which contain a porphyrin-like ring system as part of their structure.

Circle the stronger base in the pair below,and briefly explain your choice.

Give the major product for the following reaction.

Draw the structure of the aziridinium ion and explain why its pKa is lower than a typical secondary ammonium ion.

Which of the following is the structure of purine?

Which of the following compounds is indole?

Give the major product for the following reaction.

Identify oxetane.

The lone pair in pyridine is present in a

What is the major product of the following reaction?

Indicate whether the following molecule is aromatic,antiaromatic,or nonaromatic.

What is the major organic product of the following reaction?

Show how the dipole moments are oriented in pyrrolidine and pyrrole,and explain why they are oriented in opposite directions.

Provide the major organic products of the reaction shown.

Which heterocyclic ring is present in heme?

Which of the following is a quaternary ammonium ion?

Which of the following compounds is not aromatic?

What is/are the product(s)of the following reaction?

Provide the major organic product(s)of the reaction below.

How would you carry out the following transformation?