Enantiomers
Enantiomers are a fundamental concept in organic chemistry, representing molecules that are mirror images of each other but cannot be superimposed onto one another. They possess identical physical properties yet exhibit distinct interactions with other chiral molecules, often resulting in drastically different biological activities. This phenomenon plays a crucial role in pharmaceuticals, where enantiomeric purity is essential for drug efficacy and safety. Understanding the properties and behavior of enantiomers is integral to various fields, including drug development, asymmetric synthesis, and biochemistry, making it a cornerstone of modern chemical research and application.
Questions
- If D- and L- glucose are enantiomers, are D- and L-fructose not enantiomers?
- Given the following information what is the enantiomeric excess (%ee) of the mixture?
- How can I draw the structures of the two enantiomers of cysteine?
- Why are enantiomers optically active?
- What is the difference between an enantiomer and a diastereomer ?
- How are enantiomers related to each other?
- If a pure R isomer has a specific rotation of –142.0°, and a sample contains 77.0% of the R isomer and 23.0% of its enantiomer, what is the observed specific rotation of the mixture?
- How do you separate enantiomers?
- Why are enantiomers non superimposable?
- The specific rotation of (R)-(+)-glyceraldehyde is +8.7. If the observed specific rotation of a mixture of (R)-glyceraldehyde and (S)-glyceraldehyde is +2.2, what percent of glyceraldehyde is present as the R enantiomer?
- How would you determine the percentage of each isomer in the mixture?
- How do bacteria distinguish enantiomers?
- Consider a solution that contains 66% R isomer and 34% S isomer. If the observed specific rotation of the mixture is -87.039; what is the specific rotation of the pure R isomer?
- Why is only one of the enantiomers of Ibuprofen effective?
- What is an enantiomer (stereo) isomer?
- How can you determine whether a molecule is an enantiomer?
- The pure #beta# and #alpha# forms of D-glucose rotate the plane of polarized light to the right by 112° and 18.7° respectively (denoted as +112 and +18.7). Are these two forms of glucose enantiomers or diastereomers?
- How many enantiomers does glucose have?
- Do enantiomers always change the color of light?
- In racemic mixture, why are both enantiomers of compound present in equal amounts?