• 11. Adding a Functional Group Next to a Carbonyl Challenge

• 10. Synthesis of a Complex Molecule from Simple Starting Materials

• 09. Adding a Functional Group to the End of a Chain Problem

• 08. Synthesis of Phenylacetaldehyde from Benzaldehyde

• 07. Synthesis of 1,2-Dimethylcyclopentane from Methylcyclopentane

• 06. Synthesis of a Complex Ester from Toluene

• 05. Synthesis of Dioxane from Acetylene

• 04. Synthesis of Allyl Alcohol from Acetylene

• 03. Synthesis of a Bulky Alkyne