How do you name an ester? I know they end in -anoate. But when you have one like CH3-C(double bond to O going downward)-O-CH3, would it be dimethyl anoate? Thanks.
Its name is methyl ethanoate.
First, you must find the carboxylate part. In your case, this is ethanoate. Next, determine what is attached to the O (not the one double bonded to C) of the carboxylate. In your case, this is CH3 and you would call this methyl. Lastly, combine the two: methyl ethanoate
Hope this helps. Cheers!
To name an ester, you generally use the naming system known as the IUPAC (International Union of Pure and Applied Chemistry) nomenclature rules. Here's how you can name the ester you mentioned, CH3-C(double bond to O going downward)-O-CH3:
1. Identify the two parent molecules involved in the ester formation. In this case, the parent molecules are methanol (CH3OH) and ethanoic acid (CH3COOH).
2. Identify the alkyl group attached to the oxygen atom on one side of the ester, which is methyl (CH3). This will serve as the prefix.
3. Write down the name of the parent acid, which is ethanoic acid, and replace the suffix "acid" with "anoate." Ethanoic acid becomes ethanoate.
4. Now, combine the prefix from step 2 and the modified parent acid from step 3. The ester name is "methyl ethanoate."
Therefore, the correct name for the given ester (CH3-C(O)-O-CH3) is methyl ethanoate, not dimethyl anoate. The 'di' prefix implies that there are two of the same alkyl group attached to the oxygen atom, which is not the case here.