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What is Alcoholic KOH 3. What is Aqueous KOH 4. Alcoholic KOH is potassium ethoxide. The chemical formula of potassium ethoxide is C 2 H 5 OK. The C 2 H 5 O — ions act as strong bases. Therefore, these ions can abstract beta hydrogen from alkyl halides to produce alkenes. We call this type of reactions as elimination reactions , and it is a dehydrohalogenation. Aqueous KOH is potassium hydroxide in water. Answer : When methyl bromide is treated with sodium in the presence of dry ether, ethane is formed.
This reaction is known as the Wurtz reaction. Ethylmagnesium bromide is commercially available, usually as a solution in diethyl ether or tetrahydrofuran. Alkyl halides reacts with sodium in dry ether to give hydrocarbons containing double the number of carbon atoms present in the halide. This reaction is known as Wurtz Reaction. So, when 2- bromopropane is treated under Wurtz conditions , 2,3- dimethyl butane will be formed. Explanation: The reaction of halo-alkane with sodium metal in presence of dry ether is known as Wurtz reaction.
When 2 chloro propane is treated with sodium in the presence of dry ether,will give 2,3-dimethyl butane as product. As a laboratory reactant, heating 2-chloropropane with alcoholic potassium hydroxide will yield propene an alkene by a dehydrohalogenation reaction. Because of this, potassium tert-butoxide is one example of a better reagent to use. Hydrolysis of 2-chloro butane by KOH will result in the formation of secondary carbocation as an intermediate and hydrolysis of chloropropane will result in the formation of primary carbocation.
Haloalkanes and Haloarenes. Alkyl halides react with sodium in dry ether to give hydrocarbons containing double the number of carbon atoms present in the halide. This reaction is known as Wurtz reaction.
Complete answer: Wurtz reaction not preferred for the preparation of alkane containing an odd number of carbon atoms due to the formation of a number of products. Wurtz reaction generally fails when tertiary alkyl halides are used because tertiary alkyl halides include elimination reaction as side reactions.
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