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Ch.15 Aldehydes and Ketones
McMurry - Fundamentals of General, Organic, and Biological Chemistry 8th Edition
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187당신이 사용하는 게 아니라요?교과서 변경
모든 교과서McMurry 8th EditionCh.15 Aldehydes and Ketones문제 63
15장, 문제 63

Draw all the ketones you can with a chemical formula of C8H16O whose longest chain is eight carbons. Name each using both its IUPAC and common name.

검증된 단계별 안내
1
Step 1: Understand the structure of a ketone. A ketone is an organic compound where a carbonyl group (C=O) is bonded to two alkyl or aryl groups. The carbonyl group cannot be at the end of the chain, as that would make it an aldehyde.
Step 2: Analyze the molecular formula C₈H₁₆O. This indicates a saturated ketone (no double or triple bonds other than the carbonyl group) with eight carbons in total. The longest chain must include the carbonyl group and consist of eight carbons.
Step 3: Begin placing the carbonyl group at different positions along the eight-carbon chain. For example, the carbonyl group can be placed at carbon-2, carbon-3, or carbon-4 (placing it at carbon-5 would be equivalent to carbon-4 due to symmetry).
Step 4: Name each structure using IUPAC nomenclature. For example, if the carbonyl group is at carbon-2, the compound is named 2-octanone. If it is at carbon-3, the compound is named 3-octanone, and so on. For common names, identify the alkyl groups on either side of the carbonyl group and name the compound accordingly (e.g., methyl heptyl ketone for 2-octanone).
Step 5: Draw the structural formulas for each ketone. Ensure that the carbonyl group is correctly placed, and verify that the total number of carbons and hydrogens matches the molecular formula C₈H₁₆O. Label each structure with its IUPAC and common name.

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주요 개념

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

Ketones

Ketones are organic compounds characterized by the presence of a carbonyl group (C=O) bonded to two carbon atoms. They are typically formed through the oxidation of secondary alcohols and are commonly found in various biological and industrial processes. In the context of the given formula C₈H₁₆O, ketones can be identified by ensuring that the carbonyl group is located within the carbon chain, not at the ends.
추천 영상:
가이드 코스
1:29
Ketone Bodies Concept 1

IUPAC Naming

The International Union of Pure and Applied Chemistry (IUPAC) naming system provides a standardized method for naming chemical compounds. For ketones, the name is derived from the longest carbon chain containing the carbonyl group, with the suffix '-one' indicating the presence of the ketone functional group. The position of the carbonyl group is indicated by a number, which specifies its location within the carbon chain.
추천 영상:
가이드 코스
3:18
IUPAC Naming Concept 3

Common Names

Common names are informal names used to identify chemical compounds, often based on historical or traditional usage rather than systematic rules. For ketones, common names may derive from the names of the alkyl groups attached to the carbonyl carbon. Understanding both IUPAC and common names is essential for accurately identifying and communicating about ketones in organic chemistry.
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