Textbook Question
Draw skeletal structures for the following:
f. 2,6-dimethyl-4-(2-methylpropyl)decane
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4. Alkanes and Cycloalkanes
IUPAC Naming
1:52 minutesProblem 11d
Textbook Question
Draw the structure for each of the following:
d. 2,4,5-trimethyl-4-(1-methylethyl)heptane
Verified step by step guidance1
Step 1: Start by identifying the parent chain. The parent chain is 'heptane,' which means it is a straight chain of 7 carbon atoms. Draw a linear chain of 7 carbons, ensuring all are connected by single bonds.
Step 2: Number the parent chain from one end to the other. Choose the numbering direction that gives the substituents the lowest possible numbers. In this case, number the chain from left to right.
Step 3: Add the substituents to the parent chain based on their positions and names. The substituents are: (a) three methyl groups at positions 2, 4, and 5, and (b) a 1-methylethyl group at position 4. Place these groups accordingly on the numbered parent chain.
Step 4: For the 1-methylethyl group at position 4, recall that it is a branched substituent. It consists of a central carbon attached to one methyl group and one ethyl group. Draw this branching structure at carbon 4 of the parent chain.
Step 5: Verify the structure by ensuring all carbons have the correct number of bonds (four bonds per carbon), and confirm that the substituents are placed correctly according to the IUPAC name. Double-check the numbering and connectivity to ensure accuracy.
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1mKey Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
IUPAC Nomenclature
IUPAC nomenclature is a systematic method for naming organic chemical compounds. It provides rules for identifying the structure of a compound based on its name, including the longest carbon chain, substituents, and their positions. Understanding these rules is essential for accurately interpreting the name '2,4,5-trimethyl-4-(1-methylethyl)heptane' and drawing its structure.
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Structural Representation
Structural representation involves illustrating the arrangement of atoms within a molecule. This includes showing how carbon atoms are connected, the presence of functional groups, and the overall geometry. For '2,4,5-trimethyl-4-(1-methylethyl)heptane', one must visualize and depict the heptane backbone with its specified methyl and isopropyl substituents.
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Isomerism
Isomerism refers to the existence of compounds with the same molecular formula but different structural arrangements. In the case of '2,4,5-trimethyl-4-(1-methylethyl)heptane', recognizing potential isomers is important for understanding how different structural forms can affect the properties and reactivity of the compound. This concept is crucial when drawing and analyzing organic structures.
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