CH3 a. b. CH3 CH3 CH3 но- но- -OH "CH3 'CH3 -CH3 H;C но С.

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Chapter1: Chemical Foundations
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Determine the relationship between the following compounds if stereoisomers (enantiomer/diastereomers) indicate R or S, E or Z, Cis or Trans for each stereocenter. 

The image presents three groups of chemical structures, labeled as a, b, and c. 

### a. Cyclohexane Derivatives
- The first structure is a cyclohexane ring with two methyl (CH₃) groups attached. These groups are in an axial-equatorial position, indicated by the wedge (solid) and dash (hashed) bonds.
- The second structure is similar, but both methyl groups are in an equatorial position, signified by wedge bonds.

### b. Hydroxy Acids
- The left structure depicts 2-hydroxypropanoic acid (lactic acid), with a hydroxyl group (OH) on the second carbon of a three-carbon chain, and a carboxylic acid group (COOH) at the end.
- The right structure represents 3-hydroxy-2-methylpropanoic acid, with the hydroxyl group on the third carbon and a methyl group on the second carbon alongside the carboxylic acid.

### c. Terpene Structures
- The left structure shows a monoterpene featuring a cyclohexene ring with two methyl groups. The ring has an isopropyl group attached.
- The right structure is similar, with one of the methyl groups on the ring in an equatorial position, as indicated by the bold wedge bond, symbolizing stereochemistry.

These diagrams are essential for understanding molecular geometry and functional groups in organic chemistry.
Transcribed Image Text:The image presents three groups of chemical structures, labeled as a, b, and c. ### a. Cyclohexane Derivatives - The first structure is a cyclohexane ring with two methyl (CH₃) groups attached. These groups are in an axial-equatorial position, indicated by the wedge (solid) and dash (hashed) bonds. - The second structure is similar, but both methyl groups are in an equatorial position, signified by wedge bonds. ### b. Hydroxy Acids - The left structure depicts 2-hydroxypropanoic acid (lactic acid), with a hydroxyl group (OH) on the second carbon of a three-carbon chain, and a carboxylic acid group (COOH) at the end. - The right structure represents 3-hydroxy-2-methylpropanoic acid, with the hydroxyl group on the third carbon and a methyl group on the second carbon alongside the carboxylic acid. ### c. Terpene Structures - The left structure shows a monoterpene featuring a cyclohexene ring with two methyl groups. The ring has an isopropyl group attached. - The right structure is similar, with one of the methyl groups on the ring in an equatorial position, as indicated by the bold wedge bond, symbolizing stereochemistry. These diagrams are essential for understanding molecular geometry and functional groups in organic chemistry.
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