WARM UP 1.Draw a cycloalkane. 2.Draw an alkene with a halogen functional group. 3.Draw an alkane with a ketone functional group. 4.Draw an alkyne with a carboxylic acid functional group.

Naming Base Chains Chemistry II

Rules of Naming Rules defined by IUPAC – International Union of Pure and Applied Chemistry Names designed for clarity, not simplicity

Naming Alkanes Based on # of C atoms – Methane = 1 – Ethane = 2 – Propane = 3 – Butane = 4 – Pentane = 5

Naming Alkanes – Hexane = 6 – Heptane = 7 – Octane = 8 – Nonane = 9 – Decane = 10 C atoms can be numbered

Naming Alkenes and Alkynes # to indicate double or triple bond position – Smallest number possible Use alkane name Change ending – Alkenes = -ene – Alkynes = -yne

Naming Isomers T-shapes – Add iso- to beginning of name

Naming Isomers Rings – Add cyclo- to beginning of name

Naming Isomers Cis or trans – Add cis- or trans- to beginning of name

Naming Branching Aliphatics Base name – Always use alkene or alkyne chain, or alkane chain that is the longest

Naming Branching Aliphatics Branching groups – Use # to indicate position on base chain – Name based on # of C, with –yl ending

Naming Branching Aliphatics Final name order – All branching groups (alphabetical order), followed by base name

WRAP UP Name the following molecules, based on the carbon chain drawings.