Help with Other Named Reactions - Organic Chemistry

The most acidic carbon in a dicarbonyl gets abstracted to form an enolate. The reaction involves a ketone with a double bond between the alpha and beta carbons. The carbon-carbon souble bond electrons attack the beta carbon of the alkene. At this point, the electrons from the alkene move to form a double bond between the carbonyl and alpha carbon and an enolate is fromed. The negative oxygen bonds to a hydrogen, forming the enol. Through enol-ketone tautamerization, a ketone is formed.

An alkyl halide and phtalimide react under basic conditions to form a primary amine. The halogen leves and the nitrogen of the phtahlimide bonds to that carbon on the alkane. In the next step, the nitrogen leave the phthalimide. In the presence of base, the phthalimide gains two negative oxygens in the stead of the nitrogen. The final product is a primary amine.

The numbering of the molecule begins across the double bond and goes in the direction where the lowest numbers for substituents can be achieved. Thus, the methyl group will be on carbon two and the bromine on carbon 3. Substituents are ordered alphabetically. The base molecule is a six-membered ring with one double bond. This is called a cyclohexene.

The longest chain has five carbons and a double bond, so the base molecule is pentene. There is a methyl group on carbon 3. The double bond is between carbons two and three. The highest priority substituents are the ethyl group on one side and the methyl group on the other. One is up and one is down, so the molecule is E as opposed to Z.

In a free radical halogenation, a bromine group will form a bond with the most substituted carbon atom. This method leads to the most stable radical intermediate.

The reaction given is called a Fischer esterification reaction. It is a reaction between an alcohol and a carboxylic acid to form an ester. Carboxylic acids are not reactive enough to be attacked by an alcohol so the reaction requires a strong acid catalyst like hydrochloric acid for the reaction to occur. Below is the mechanism:

The compound given has an aldehyde functional group and the parent chain has to have the -CHO group. Below is how the compound given should be numbered:

Aldehydes are named by changing the ending -e from the corresponding alkane with -al. The substituents on the parent chain should be named in alphabetical order. Therefore the answer is 2-ethyl-4-methylpentanal.

We have to find the longest chain to name it as the parent chain starting at the end with the nearest the substituent. Below is how the compound given should be numbered:

The substituents on the parent chain should be named in alphabetical order and because we have 2 bromine substituents we must add the name di-bromo and add the number of the carbon atom on the parent chain in which they appear. Therefore the answer is 2,3-dibromo-4-methylhexane.

The compound given has an alcohol functional group and the parent chain has to have the hydroxyl functional group. Below is how the compound given should be numbered:

Alcohols are named by changing the ending -e from the corresponding alkane with -ol. The substituents on the parent chain should be named in alphabetical order. Therefore the answer is 3-chloro-4-methylhexanol.

The compound given has an alkene functional group and the longest hydrocarbon chain containing the double bond will be used as the parent chain. Below is how the compound given should be numbered:

We must use the E, Z system of naming alkenes that assigns priority to substituents on the based on atomic number. This compound must be labeled with a Z geometry because the substituents with the higher priority are on the same side. Because a methyl group is on the 4th carbon atom on the parent chain, we must add the name 4-methyl to the naming of this compound. Therefore the answer is Z-4-methyl-2-octene.

The compound given has an alkene functional group and the longest hydrocarbon chain containing the double bond will be used as the parent chain. Below is how the compound given should be numbered:

We must use the E, Z system of naming alkenes that assigns priority to substituents on the based on atomic number. This compound must be labeled with an E geometry because the substituents with the higher priority are on opposite sides. Because a methyl group is on the 5th carbon atom on the parent chain, we must add the name 5-methyl to the naming of this compound. Therefore the answer is E-5-methyl-2-heptene.

The reaction below is called and electrophilic aromatic substitution reaction and occurs for all aromatic compounds such as benzene. is a catalyst in this reaction to polarize the to give allowing for the presence of polarized which is more reactive. Below is the mechanism for this reaction:

In the reaction below, a ketone is protonated by a strong acid. This triggers the deprotonation of the weakly acidic hydrogen bonded to the alpha carbon by a bromide ion and formation of an alkene functional group.

In the reaction below, a ketone is protonated by a strong acid. This triggers the deprotonation of the weakly acidic hydrogen bonded to the alpha carbon by a chloride ion and formation of an alkene functional group.

The hydrogen bonded to the alpha carbon on carbonyl compounds is weakly acidic and when reacted with a strong base can deprotonate forming and enolate ion which has two resonance structures as shown below: