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Q.

Which of the following statements are correct?

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a

The IUPAC name of the compound Question Imageis 1 – 3 – ethylcycolopentane

b

In IUPAC name of the compound Question Imageis 1 – cyclobutyl – 3 – methylcylopentane 

c

The IUPAC name of the compound iQuestion Images bicycle [2.2.1] heptane

d

The IUPAC name of the compound Question Image is 2 – methyl – 6

bromobicyclo [2.3.0] heptane.

answer is B.

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Detailed Solution

A) The name is 1 – ethyl – 3 – methylcyclopentane.   B) correctly given

C) The prefix bicycle – is combined with a pair of brackets enclosing numbers separated by dots, which is followed by the name of the alkane whose number of Cs is equal to the number of Cs in the rings. The bracketed numbers show how many Cs are in each bridge and are cited in decreasing order (correctly given)

D) To number bicycles, start at one bridgehead C and move along the longest chain to the next

bridgehead C. continue along the next longest chain to return to the first bridgehead C so that the shortest bridge is numbered last.

Question Image

Following these guidelines, the correct name of the compound is 3 – Bromo – 6 – methyl bicyclo  [3.2.0] heotabe. (wrongly given)

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