Drill: Draw & name 2 isomers of C4H10

Alkenes

Hydrocarbons with at least one double bond Alkenes Hydrocarbons with at least one double bond

Alkenes Each double bond reduces the number of hydrogens in the hydrocarbon by two

All alkenes are unsaturated hydrocarbons

Unsaturated Hydrocarbons Contain less than the maximum number of hydrogens

Alkenes

Naming Alkenes Number the carbons on the chain; so that, the double bond has the lowest possible number

Naming Alkenes The double bond will always fall between two numbered carbons

Naming Alkenes Apply the lower of those two numbers to the double bond

Naming Alkenes 4 2 1 3 2-butene

Problems 4 2 1 3 2 3 4 1

Geometric Isom. 4 2 1 3 2 3 4 1

Geometric Isomers Isomers whose arrangement is same side (cis) or opposite side (trans) of a stationary bond

Naming Alkenes Draw a line through the double bond parallel to each of the bonds in the double bond

Naming Alkenes 4 2 1 3

Naming Alkenes If the two ends of the chain are on the same side of the line, it is a cis-double bond

Naming Alkenes If the two ends of the chain are on opposite sides of the line, it is a trans-double bond

Naming Alkenes Place cis or trans at the start of the name in the organic compound

Naming Alkenes 4 2 1 3 trans-2-butene

trans-3-ethyl-4,6-dimethyl-5-cyclopentyl-2-octene Draw the Following: trans-3-ethyl-4,6-dimethyl-5-cyclopentyl-2-octene

Drill: Draw the compound below & its Optical Isomer: trans-3-ethyl-4,6-dimethyl-5-cyclopentyl-2-octene

Review

Organic Chm HW Test 2 on Cycloalkanes & alkenes is attached. Complete it & turn it in by Monday

Name:

Name:

Name:

Draw: trans-2-methyl-1-cyclopropyl-3-hexene

Draw: 2-methyl-1- pentylcyclohexane

Draw & Name isomers of: C5H10

Name the alkenes on the board Naming Alkenes Name the alkenes on the board