4/29 Notes – Naming Branched Alkanes

 

C.        Naming Branched Alkanes

                        1.         Name and Formula of Radical

                                    Methyl             CH3 –

                                    Ethyl               C2H5 –

                                    Propyl              C3H7 –

                                    Butyl               C4H9 –

                                    Pentyl              C5H11 –

                        2.         Rules for Naming

                                    a.         Find longest chain, name

                                    b.         Name Radicals off the main chain

                                    c.         To name radicals use location and radical name in front of longest chain name

                                    d.         Name radicals in alphabetical order

                                    e.         If there is more than one radical, add the prefix (di, tri, tetra and so on)

                                    f.          RADICALS NEED THE LOWEST POSSIBLE NUMBERS OFF THE MAIN CHAIN

                        3.         Write the formula for each of the following

                                    a.         2-methylhexane

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                                    b.         2,2-dimethylpentane

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                        4.         Name the following compound

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                                    2, 2, 4-trimethylhexane