Drill: Give the molecular formula & the condensed, skeletal, and complete structures of a hydrocarbon with the same # of carbons as the # of letters in your first name.

Review Drill & Check HW

Organic HW Review PP-3 Complete the attached assignment & turn it in tomorrow.

Branched Alkanes

Any hydrogen in a hydrocarbon chain can be substituted with another hydrocarbon group

H H H H-C-C-C-H H H H propane

H H H H-C-C-C-H H H H propane

H H H H-C-C-C-H H CH3 H _____propane

The hydrocarbon or functional group that replaces the hydrogen Substituents The hydrocarbon or functional group that replaces the hydrogen

Alkyl Groups The hydrocarbon group that replaces the H is called an alkyl group Suffix: -yl: hydrocarbon group

Alkyl Groups 1 = methyl 6 = hexyl 2 = ethyl 7 = heptyl 3 = propyl 8 = octyl 4 = butyl 9 = nonyl 5 = pentyl 10 = decyl

Branched Chains When an alkane chain gets another hydrocarbon group substituted onto it Branches: alkyl groups or sidechains

Branched Chains C C C C C C C C C C

Naming Branched Chains

Drill: Name Each: H3C-CH2-CH3 C-C-C-C-C

) Find the longest continuous carbon chain & name it as the main chain ) Find the longest continuous carbon chain & name it as the main chain. The final name will end with the naming of the main chain

C Hexane C C C C C C C C C

) Number each carbon in the chain; so that, the side chains will be connected to the lowest possible numbers on the carbons

C Hexane C1 C2 C3 C4 C5 C6 C C C

) Name the side chains or substituted groups, & precede them with the # of the carbon they are connected to & a dash

C 2-methyl C1 C2 C3 C4 C5 C6 C C C 2-methyl 4-ethyl

) If identical groups appear more than once, use prefixes: di for 2, tri for 3, tetra for 4, penta for 5, etc Examples: dimethyl, tripropyl, etc

C 2,2-dimethyl C1 C2 C3 C4 C5 C6 C C C 4-ethyl

) Name the sidechains or groups in alphabetical order, but ignore the prefixes when doing so Examples: ethyl comes before dimethyl, e < m

) Separate numbers with commas, use hyphens between words & numbers, and write the alkanes as one word Example: dimethylhexane

C C C C C C C C C C 4-ethyl-2,2-dimethylhexane

Name the organic compound on the board

Drill: Name CH3 CH2 H3C-CH-CH2-CH-CH-CH3 CH3 CH2

CH3 CH2 H3C-CH-CH2-CH-CH-CH3 CH3 CH2

4-ethyl-2,5-dimethylheptane CH3 CH2 H3C-CH-CH2-CH-CH-CH3 CH3 CH2

Review Drill & Check HW

Organic HW Review PP-3 Complete the attached assignment & turn it in tomorrow.

Pass the Seating Chart Around: so that, the Students Can Make Corrections.

Name the organic compound on the board

H3C-CH2 CH2-CH2-CH3 CH2-CH-CH-CH2-CH-CH2-CH3 CH2-CH2-CH3 1) H3C-CH2 CH2-CH2-CH3 CH2-CH-CH-CH2-CH-CH2-CH3 CH2-CH2-CH3

1) H3C-CH2 CH2-CH2-CH3 CH3-CH-CH-CH2-CH-CH2-CH3 CH2-CH2-CH3

1) H3C-CH2 CH2-CH2-CH3 CH3-CH-CH-CH2-CH-CH2-CH3 CH2-CH2-CH3 6-ethyl-3-methyl-4-propylnonane

2) C C-C C-C-C C-C-C C C C C

2) C C-C C-C-C C-C-C C C C C

2) C C-C C-C-C C-C-C C C C C

2) C C-C C-C-C C-C-C C C C C 3,4-diethyl- 2-methyloctane

3)

3)

3) 3-ethyl-2,5,7-trimethyl-4,6-dipropyldecane

Deriving Structures from Names Draw the main chain first Look to the name ending Draw the branches Look to the # & group name

Draw: 3,4-diethyl-2-methyloctane 2,3,5-trimethylhexane 5-butyl-3-ethyl-2,6,8-trimethyl-4-propyldecane

5-butyl-3-ethyl-2,6,8,9-tetramethyl-4,7-dipropyldecane Draw: 5-butyl-3-ethyl-2,6,8,9-tetramethyl-4,7-dipropyldecane

Isomers Compounds that have the same chemical formula, but different shapes

Types of Isomers Structural or skeletal Geometric or cis/trans Functional Positional Optical

Structural Isomers When there are differences in the carbon chains

Structural Isomers C-C-C-C-C C C-C-C-C C-C-C C C

Structural Isomers C-C-C-C-C C C-C-C-C C-C-C C C

Structural Isomers Pentane methyl dimethyl butane propane

Draw & name all the possible structural isomers for C7H16

Drill: Draw & name all the possible structural isomers for C6H14

Review Drill & Check HW

Organic HW Review PP-3 Complete the attached assignment & turn it in the next class period.

This Week’s Schedule Lab Tomorrow Review Thursday Test Friday

Name: C-C-C C C-C-C-C-C-C-C C C-C

C-C-C C C-C-C-C-C-C-C C C-C

3,5-diethyl-3,5-dimethyloctane

Draw the Following: 3,5-diethyl-2,4,6-trimethyloctane 5-butyl-3-ethyl-2,6,6,8-tetramethyl-4-propylnonane

Draw the condensed, complete, skeletal, & stick structures for: 3-ethyl-2,2-dimethylpentane

Draw & name all the possible structural isomers for C8H18

Drill: Name & describe 5 organic prefixes & 4 organic suffixes

Review Drill & Check HW

Test on Alkanes tomorrow

Review

Identify Organic terms Organic prefixes Organic suffixes

Name: CH3-CH2 H3C-CH-CH2-C-CH2-CH3 CH3-CH2 CH3

CH3-CH2 H3C-CH-CH2-C-CH2-CH3 CH3-CH2 CH3

3-ethyl-3,5-dimethylheptane CH3-CH2 H3C-CH-CH2-C-CH2-CH3 CH3-CH2 CH3

Name: C-C C-C C-C-C-C-C-C-C-C-C C C C C

C-C C-C C-C-C-C-C-C-C-C-C C C C C

6,7-diethyl-3,4,7-trimethyldecane C-C C-C C-C-C-C-C-C-C-C-C C C C C

Name:

5-ethyl-2,4,6,7-tetramethylnonane

Name:

5-butyl-2,3,7,8-tetramethyl-6-propyldecane

Draw the complete structure of: 3-ethyl-2-methylpentane

Draw the condensed structure of: 3-ethyl-2,4,5-trimethylhexane

Draw a skeletal structure of: hexamethylpentane

Draw a stick structure of: 5-butyl-3-ethyl-2,4,6,8- tetramethyl-4-propyl decane

Draw & Name isomers of: C7H16

Draw an optical isomer of: C-C-C-C-C-C-C C