First slide

Organic molecular structures and naming

Question

IUPAC name of the compound is

Moderate

A

2-methyl-6-bromo bicyclo[2,3,0] heptane
B

3-bromo-6-methyl bicyclo [3.2.0] heptane
C

6-methyl-3-bromo biCyclo[3.2.0] heptane
D

6-bromo-2-methyl bicyclo[3.2.0] heptane

Solution

i)To number biCyclos, start-at one bridgehead carbon and move along the longest chain to the next bridge head carbon.
Continue along the next longest chain to return to the first bridgehead carbon, so that the shortest bridge is numbered last.
ii)Alphabetical order of substituents and lowest sum rule.

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