Skip to main content
Ch.3 - Structure and Stereochemistry of Alkanes
Wade - Organic Chemistry 9th Edition
Wade9th EditionOrganic ChemistryISBN: 9780135213728당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Wade 9th EditionCh.3 - Structure and Stereochemistry of Alkanes문제 16a,b
3장, 문제 16a,b

Draw the structure and give the molecular formula for each of the following compounds.
a. 1-ethyl-3-methylcycloheptane
b. isobutylcyclohexane

검증된 단계별 안내
1
Step 1: Understand the naming conventions for organic compounds. The name '1-ethyl-3-methylcycloheptane' indicates a cycloheptane ring with an ethyl group attached to the first carbon and a methyl group attached to the third carbon. Similarly, 'isobutylcyclohexane' indicates a cyclohexane ring with an isobutyl group attached.
Step 2: Draw the base ring structure for each compound. For '1-ethyl-3-methylcycloheptane', draw a seven-membered ring (cycloheptane). For 'isobutylcyclohexane', draw a six-membered ring (cyclohexane).
Step 3: Add the substituents to the ring. For '1-ethyl-3-methylcycloheptane', add an ethyl group (CH₃CH₂-) to the first carbon and a methyl group (CH₃-) to the third carbon of the cycloheptane ring. For 'isobutylcyclohexane', add an isobutyl group ((CH₃)₂CHCH₂-) to one of the carbons in the cyclohexane ring.
Step 4: Count the total number of each type of atom in the structure to determine the molecular formula. For '1-ethyl-3-methylcycloheptane', count the carbons and hydrogens in the cycloheptane ring and the attached ethyl and methyl groups. For 'isobutylcyclohexane', count the carbons and hydrogens in the cyclohexane ring and the attached isobutyl group.
Step 5: Write the molecular formula for each compound based on the atom count. Ensure that the formula reflects the total number of carbon (C) and hydrogen (H) atoms present in the structure.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
6m

주요 개념

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

IUPAC Nomenclature

IUPAC nomenclature is a standardized system for naming chemical compounds. It involves identifying the longest carbon chain, numbering the chain to give substituents the lowest possible numbers, and naming substituents as prefixes. Understanding this system is crucial for accurately drawing and naming organic compounds like 1-ethyl-3-methylcycloheptane and isobutylcyclohexane.
추천 영상:
03:43
The different parts of an IUPAC name

Cycloalkanes

Cycloalkanes are saturated hydrocarbons with carbon atoms arranged in a ring structure. They are named based on the number of carbon atoms in the ring, with 'cyclo-' as a prefix. Recognizing cycloalkane structures is essential for drawing compounds like cycloheptane and cyclohexane, which form the base of the given compounds.
추천 영상:
01:11
How to find the root name for cycloalkanes

Substituents and Branching

Substituents are groups attached to the main carbon chain or ring, altering the compound's structure and properties. Branching occurs when these groups, such as ethyl, methyl, or isobutyl, are attached to the main structure. Understanding how to identify and position these substituents is key to drawing the correct structure and determining the molecular formula.
추천 영상:
03:07
How to identify and locate branches (substituents)
관련 실천
교과서 질문

Draw the structure and give the molecular formula for each of the following compounds.

e. 3-ethyl-2,4-dimethylhexane

f. 1,1-diethyl-4-(3,3-dimethylbutyl)cyclohexane

943
views
교과서 질문

Draw a perspective representation of the most stable conformation of 3-methylhexane.

1806
views
교과서 질문

Draw the structure and give the molecular formula for each of the following compounds.

c. cyclopropylcyclopentane

d. 3-ethyl-1,1-dimethylcyclohexane

1038
views
교과서 질문

Draw the structure that corresponds with each name.

k. cyclobutylcyclohexane

l. cis-1-bromo-3-chlorocyclohexane

1679
views
1
rank
교과서 질문

Give IUPAC names for the following compounds.

1237
views
교과서 질문

Draw a graph, similar to Figure 3-11, of the torsional energy of 2-methylbutane as it rotates about the C2—C3 bond.

3449
views