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Nomenclature rules


R M

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Out of two possible prefixes, which one to follow:-

1) 2,4 dimethyl,6 ethyl

2) 2,6 dimethyl,4 ethyl

 

Given that the parent ring is 1,3 dioxane

Edited by R M
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Out of two possible prefixes, which one to follow:-

1) 2,4 dimethyl,6 ethyl

2) 2,6 dimethyl,4 ethyl

 

Given that the parent ring is 1,3 dioxane

According to IUPAC rule if there is tie for numbering as it appears in your example then we need to give lowest number alphabetically menas here in your example ethyl comes first so give 4 number to ethyl and 6 to methyl

so the name is

2,6-dimethyl-4-ethyl.....

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