course reader pg 61 naming example

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Claire_Zhou_1A
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course reader pg 61 naming example

Postby Claire_Zhou_1A » Mon Mar 06, 2017 7:28 pm

At the bottom of pg 61 the third structure is named 4-Methylcyclohexa-2,5-dienone. I don't understand why it isn't 4-Methylcyclohex-2,5-dienone, that is why should we write hexa- instead of hex-.

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Re: course reader pg 61 naming example

Postby Chem_Mod » Mon Mar 06, 2017 8:37 pm

Claire_Zhou_1A wrote:At the bottom of pg 61 the third structure is named 4-Methylcyclohexa-2,5-dienone. I don't understand why it isn't 4-Methylcyclohex-2,5-dienone, that is why should we write hexa- instead of hex-.


Ketones take their name from their parent alkane chains. The ending -e is removed and replaced with -one


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