IMG_NEW_0004_001

IMG_NEW_0004_001 - > alkane-E-"4 J+...

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To Clarify when naming branched alkanes where prefix's di, tri, tetra, penta (etc) are involved: a) if the prefix relates to groups attached directly to the chain the prefix DOES NOT count when considering alphabetical order - see example below. 3-ethyl-4,5-dim ethyloctane NOT 4, 5 -dimethyl-3 - ethyloctane note: in this case the 'di' did not count for alphabetizing! b) if the prefix relates to groups attached to a branch the prefix DOES count when considering alphabetical order - see example below. This rule can be simplified by stating that if the prefix is in brackets it counts when considering alphabetical order. note: in this case 5-(1, 1-dimethylethyl)-3-ethyloctane NOT 3-ethyl-5-(1, 1 -dimethylethyl)octane the 'di' does count for alphabetizing! 2. Prioriry for assigaing root name: Fth carbo4ylic acid > aliie$yde > ketone > alcohol > amine
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Unformatted text preview: > alkane-E-"4 J+ -y- -oH -^'tt /\/-For '.*u*ple. if you have i ketone and an alcohol functionality in the same molecule the root name would be derived from that of the ketone. Note: in class we did not discuss a suffix for ethers or alkyl halides - therefore these two functionalities are always named as branches on the alkane chain. If alcohol is part of molecule that contains a ketone or an aldehyde or a carboxylic acid then the alcohol is not the root name - instead it is called hydroxy and named as a branch. YOU WILL NOT BE GNiEN EXAMPLES WHERE AN AMINE IS IN THE SAME MOLECULE AS AN ALCOHOL, KETONE, ALDEHYDE OR CARBOXYLIC ACID. ALSO YOU WILL NOT HAVE TO NAME COMPOI.NDS WHERE THERE IS BOTH AN ALDEHT'DE AND CARBOXYLIC ACID OR AN ALDEHYDE AND A KETONE OR A CARBOXYLIC ACID AI{D A KETONE IN THE SAME MOLECULE....
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