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Name The Following Alkenes Using Systematic Names Chegg Homework

  1. Find the longest continuous chain of carbon atoms that contains both carbons of the double bond.

  2. Give the lowest possible number to the double bond.

  3. Add substituents and their positions to the name of the alkene as prefixes.

  4. Identify stereoisomers. It is always safest to use the Cahn-Ingold-Prélog E/Z notation.


Give a name for

We have a six-carbon chain with a double bond between and , so this is a hexene. The base name becomes hexene.

The methyl group at changes the name to 5-methylhexene.

Now we indicate stereochemistry.

The two higher-priority groups are the methyl group on and the rest of the chain on .

Since they are on opposite sides of the double bond, the configuration is E.

The full name for the compound is (E)methylhexene.
(E)methylhexene is an acceptable name, but the preferred name puts the numbers closest to the groups they locate.

Все глаза были устремлены на нее, на руку Танкадо, протянутую к людям, на три пальца, отчаянно двигающихся под севильским солнцем. Джабба замер. - О Боже! - Он внезапно понял, что искалеченный гений все это время давал им ответ. - Три - это простое число! - сказала Соши.  - Три - это простое число.

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