Draw the structures of the following compounds. (Includes both new and old names.)
(d) 3-cyclopentylhexan-3-ol
(e) meso-2,4-pentanediol

검증된 단계별 안내

Step 1: Begin by identifying the parent chain for each compound. For (d) 3-cyclopentylhexan-3-ol, the parent chain is hexane (a six-carbon chain). For (e) meso-2,4-pentanediol, the parent chain is pentane (a five-carbon chain).

Step 2: For (d), locate the substituent and functional group. The cyclopentyl group is attached to the third carbon of the hexane chain, and the hydroxyl (-OH) group is also attached to the third carbon. Draw the hexane chain first, then add the cyclopentyl group and hydroxyl group at the correct positions.

Step 3: For (e), note that meso compounds have internal symmetry and are optically inactive. The 2,4-pentanediol has hydroxyl (-OH) groups attached to the second and fourth carbons of the pentane chain. Ensure the stereochemistry is such that the molecule is symmetric (e.g., one hydroxyl group is on a wedge and the other on a dash).

Step 4: Add all necessary hydrogens to complete the structures. Ensure that each carbon has four bonds and the correct number of hydrogens to satisfy the valency of carbon.

Step 5: Double-check the structures for accuracy, ensuring the substituents and functional groups are correctly placed, and confirm that the meso compound has internal symmetry.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

10m

주요 개념

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

Structural Representation of Organic Compounds

Understanding how to draw the structures of organic compounds is fundamental in organic chemistry. This involves recognizing the arrangement of atoms, including carbon skeletons, functional groups, and stereochemistry. Familiarity with line-angle formulas and the ability to depict three-dimensional structures on a two-dimensional plane is essential for accurately representing compounds.

Nomenclature of Organic Compounds

Organic nomenclature is the systematic method of naming organic chemical compounds based on their structure. The names provide information about the number of carbon atoms, functional groups, and the presence of stereoisomers. Knowing how to interpret and convert between IUPAC names and structural formulas is crucial for understanding the compounds in question.

Stereochemistry

Stereochemistry deals with the spatial arrangement of atoms in molecules and how this affects their chemical behavior. In the case of meso compounds, such as meso-2,4-pentanediol, it is important to recognize that they possess multiple stereocenters but are achiral due to an internal plane of symmetry. Understanding stereochemistry is vital for accurately drawing and interpreting the structures of compounds with chiral centers.

Draw the structures of the following compounds. (Includes both new and old names.) (d) 3-cyclopentylhexan-3-ol (e) meso-2,4-pentanediol