Question

Give the IUPAC name for C6H5-CH--CH-CH2cl

Answer 1

Answer: *1-Chloro-3-phenylprop-2-ene*

Explanation: Described In the Picture Attached... Yoa can Refer to it.!

Answer 2

The IUPAC name of $C_6H_5-CH=CH-CH_2Cl$ is 3-Chloro-1-phenylprop-1-ene.

Explanation:

• To write the IUPAC name of a compound, the following things must be first identified they are:    

1. Name and position of the substituents whose name must be written as prefix of the compound.
2. Number of carbons.
3. Nature of bond
4. Name and position of the functional group whose name must be written as suffix of the compound.

• Accordingly, when the given structure is examined, it gives the following details:

1. The substituent groups are 'Cl' and '$C_6H_5$' which are called as chloro and phenyl respectively.
2. Thus the prefix as per the alphabetical order is Chloro followed by phenyl. 'Cl' is located on the 3 carbon where as phenyl is located on 1st carbon. (Refer attachment)
3. There are 3 carbon atoms present in the chain. Thus the root word is -prop.
4. Since the first and second carbon are attached with double bond, the nature of bond is -ene.

• Thus the IUPAC name of $C_6H_5-CH=CH-CH_2Cl$ is derived as 3-Chloro-1-phenylprop-1-ene.

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