1.

In IUPAC nomenclature, while numbering, should double bond get highest priority or substituent?

Answer»

ANSWER:

If four DIFFERENT groups are attached to the carbons of the DOUBLE bond, you need to use the E/Z NOMENCLATURE convention.

In the E/Z system of classification the ATOMS attached to each carbon of a double bond are assigned a priority based on atomic number.

Higher atomic number atoms are assigned a higher priority.


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