Naming Alkanes

1.Find the longest continuous chain of carbons. This is the parent chain. Ethyl branch attached to a hexane chain: C - C - C - C C C C Branches - Number the carbons of the parent chain from the end that gives the lowest number to the first branch:

3. Name each alkyl group including the number of the parent carbon it is attached to showing position. 4. Names are all ONE word. Hyphens used to separate numbers from words. 3-ethylhexane C - C - C - C C C C

Draw the structural formula for 2-methylhexane

CH 3 CH(CH 3 )CH 2 CH(CH 3 )CH 3 2,4-dimethylpentane

5.Multiple alkyl groups require prefixes (di, tri) and parent numbers for each. The alkyls are named in alphabetical order. Commas are used to separate numbers. (5-ethyl-2,4-dimethyloctane) C - C - C - C C C C C 4-ethyl-2-methylhexane

5-ethyl-2,4-dimethyloctane C - C - C - C - C - C C C C C 7812 C

3,3,5trimethyloctane

3-ethyl-2,7-dimethyl-4-propyloctane

CH 3 CH 2 CH 2 CH(C 2 H 5 )CH 2 C(CH 3 ) 2 CH 3 4-ethyl-2,2-dimethylheptane

Organic chemistry is the study of carbon compounds. Carbon will usually make 4 covalent bonds. Alkanes contain only single carbon - carbon bonds. The general formula of an alkane is C n H 2n+2