Naproxen is a commercially available anti-inflammatory sold under the name Aleve.
(b) Given that naproxen rotates plane-polarized light in the clockwise direction, should it be referred to as (d) or (l)?
(c) Is it (+) or (-)?
(d) What direction (d or l; + or −) would you expect the enantiomer of naproxen to rotate plane-polarized light?

검증된 단계별 안내

Step 1: Understand the relationship between optical activity and the terms (d) and (l). The term (d) refers to dextrorotatory, meaning the compound rotates plane-polarized light clockwise. The term (l) refers to levorotatory, meaning the compound rotates plane-polarized light counterclockwise.

Step 2: Recognize the relationship between optical activity and the symbols (+) and (-). The symbol (+) is used for dextrorotatory compounds, while (-) is used for levorotatory compounds.

Step 3: Analyze the given information about naproxen. It is stated that naproxen rotates plane-polarized light in the clockwise direction. Therefore, it should be referred to as (d) and (+).

Step 4: Consider the enantiomer of naproxen. Enantiomers are non-superimposable mirror images of each other and have opposite optical activities. If naproxen is (d) and (+), its enantiomer would rotate plane-polarized light counterclockwise and be referred to as (l) and (-).

Step 5: Summarize the findings. Naproxen is (d) and (+), while its enantiomer is (l) and (-). This conclusion is based on the relationship between optical activity and the terms (d)/(l) and (+)/(-).

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Chirality

Chirality refers to the property of a molecule that makes it non-superimposable on its mirror image, much like how left and right hands are mirror images but cannot be perfectly aligned. Chiral molecules often exist as pairs of enantiomers, which are two compounds that are mirror images of each other. This property is crucial in organic chemistry, especially in the context of drug design, as different enantiomers can have vastly different biological effects.

Optical Activity

Optical activity is the ability of chiral substances to rotate the plane of polarized light. The direction of this rotation can be clockwise (dextrorotatory, denoted as '+') or counterclockwise (levorotatory, denoted as '−'). This property is used to distinguish between enantiomers, as each enantiomer will rotate light in opposite directions, providing a method for their identification and characterization.

Enantiomers

Enantiomers are a specific type of stereoisomer that are non-superimposable mirror images of each other. They have identical physical properties in an achiral environment but can exhibit different behaviors in biological systems due to their distinct spatial arrangements. Understanding the relationship between enantiomers is essential in organic chemistry, particularly in pharmacology, where one enantiomer may be therapeutically active while the other could be inactive or harmful.