Unit 2 - Organic Chemistry [CHEM30] 

Alkenes and Alkynes

*contain C-C double and triple bonds

• general alkene formula = CnH2n
• general alkyne formula = CnH2n-2

Naming Alkenes and Alkynes

• find parent chain (with double or triple bond)
• want lower number on the placement
    * -ane suffix (single bond)
    * -ene suffix (double bond)
    * -yne suffix (triple bond)
      * double bond > in between chain 2-3
      * triple bond > in between chain 3-4

    ### examples
    * 4-methyl-2-pentene
    * 3-ethyl-5-methyl-3-heptene
    * CH2=CH-CH2-CH3

• multiple double or triple bonds
    * add prefixes (di, tri, tetra)
      * 1,3- butadiene
      * 3-methyl-1,4-pentadiyne

    ### examples 
    * 4-methyl-1-cyclohexene
    * 4,6-dimethyl-1-cyclohexene
    * 1-methyl-1,4-cyclohexdiene