Organic Chemistry Lecture I Review

Conformational: Different spacial orientation i.e. Hexane. Newman Projections

Anti-Staggered -- Gauche--Eclipsed--Fully Eclipsed

Structural: Different Bond-Bond connectivity. i.e. vic vs. gem-dihalide

Relative: R or S Determination between 2 Chiral Carbons Absolute: R or S Determination of one Chiral Center in Single Compound.

• Change in configuration about the Chiral Carbon when comparing to molecules. ie. R-->S or S-->R
• Product of SN2 Reaction

Comparison of "Mirror Image" compounds that have the same chemical properties.

• Mixture in which both "Mirror Image" components are present. No optical rotation present.
• Product of an SN1 Reaction

Trash Can Category. Isomers that are not mirror images. Optically active!

cis/trans: Describes 2 substituents about a double bond found opposite and at same side respectively.

• Z/E: Determines the location of 3-4 substituents about a double bond with priority by molecular weight.
• Diastereomers

Epimer: Diastereomeric comparison that has a difference about 1 chiral carbon. i.e. α β "anomers" of Glucopyranosyl

• Dipole moment: of a cis isomer allows for attractive intermolecular forces. The Net dipole moment is in the same direction as the substituents.
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