Ch. 2 - Molecular RepresentationsWorksheetSee all chapters
All Chapters
Ch. 1 - A Review of General Chemistry
Ch. 2 - Molecular Representations
Ch. 3 - Acids and Bases
Ch. 4 - Alkanes and Cycloalkanes
Ch. 5 - Chirality
Ch. 6 - Thermodynamics and Kinetics
Ch. 7 - Substitution Reactions
Ch. 8 - Elimination Reactions
Ch. 9 - Alkenes and Alkynes
Ch. 10 - Addition Reactions
Ch. 11 - Radical Reactions
Ch. 12 - Alcohols, Ethers, Epoxides and Thiols
Ch. 13 - Alcohols and Carbonyl Compounds
Ch. 14 - Synthetic Techniques
Ch. 15 - Analytical Techniques: IR, NMR, Mass Spect
Ch. 16 - Conjugated Systems
Ch. 17 - Aromaticity
Ch. 18 - Reactions of Aromatics: EAS and Beyond
Ch. 19 - Aldehydes and Ketones: Nucleophilic Addition
Ch. 20 - Carboxylic Acid Derivatives: NAS
Ch. 21 - Enolate Chemistry: Reactions at the Alpha-Carbon
Ch. 22 - Condensation Chemistry
Ch. 23 - Amines
Ch. 24 - Carbohydrates
Ch. 25 - Phenols
Ch. 26 - Amino Acids, Peptides, and Proteins

Solution: Propose a pair of stereoisomers with the molecular formula C 5H8O that BOTH contain a ketone. 

Solution: Propose a pair of stereoisomers with the molecular formula C 5H8O that BOTH contain a ketone. 

Problem

Propose a pair of stereoisomers with the molecular formula C 5H8O that BOTH contain a ketone.

 

Solution

We’re being asked to draw the structure for a pair of stereoisomers with the molecular formula C5H8O that are both ketones.


Recall that stereoisomers are isomers with the same molecular formula and structures but different spatial arrangements.


Also, recall that the general structure of ketones is:



Note that the IHD of a ketone is 1.


For this problem, we need to do the following steps:

Step 1: Determine the IHD of the formula.

Step 2: Propose stereoisomers.


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