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青州's Question
Chemistry
Posted 7 months ago

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Draw the structure (condensed form) for the following:

Question 15
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Draw 2,3 -dichloro-3-fluoro-1-butene
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Answer from Sia
Posted 7 months ago
Solution
1
Identify the main carbon chain: The compound is a butene, which means the main carbon chain consists of four carbon atoms
2
Number the carbon chain: The numbering of the carbon chain must be done in such a way that the substituents receive the lowest possible numbers. In this case, the double bond has the highest priority, so we start numbering from the end of the chain closest to the double bond, giving us 1-butene
3
Add the substituents: According to the name, there are two chlorine atoms and one fluorine atom. The chlorines are on the second and third carbon, and the fluorine is on the third carbon
4
Draw the condensed structure: The condensed structural formula for 2,3-dichloro-3-fluoro-1-butene is CH3CClFCHClCH=CH2CH_3CClFCHClCH=CH_2. The double bond is between the first and second carbon atoms
Answer
CH3CClFCHClCH=CH2CH_3CClFCHClCH=CH_2
Key Concept
Drawing condensed structures from IUPAC names
Explanation
The condensed structure is derived by identifying the main carbon chain, numbering it to give substituents the lowest numbers, and then adding the substituents at the appropriate carbon atoms.

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