객관식
Isopropyl alcohol is commonly known as rubbing alcohol. What is the IUPAC name of this alcohol?
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4. Alkanes and Cycloalkanes
Naming Alcohols
객관식
Which of the following is the correct molecular structure for 2-methyl-1-butanol?
A
CH-CH-CH-CHCHOH
B
CH-CH-CH(CH)-CHOH
C
CH-CH(CH)-CH-CHOH
D
CH-CH-CH-CHOH
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검증된 단계별 안내1
Identify the parent chain in the name 2-methyl-1-butanol. The parent chain is 'butanol,' which means a four-carbon chain with an -OH group on carbon 1.
Number the carbon chain starting from the end nearest the -OH group to give the alcohol the lowest possible number. So, carbon 1 has the -OH group.
Locate the substituent '2-methyl,' which means there is a methyl group (-CH\3) attached to carbon 2 of the main chain.
Draw the four-carbon chain with the -OH group on carbon 1, then add a methyl group attached to carbon 2.
Verify the structure matches the name: a four-carbon chain with an -OH on carbon 1 and a methyl substituent on carbon 2, which corresponds to the structure CH\3-CH(CH\3)-CH\2-CH\2OH.
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