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How cyclohexene might be formed as a byproduct in the synthesis of cyclohexanone?
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How cyclohexene mignt be formed as a byproduct in the synthesis of cyclohexanone?
One of the common ways to synthesize ketones is by oxidizing secondary alcohols. Cyclohexanone can be easily prepared from cyclohexanol (or hydroxycyclohexane - same thing) by allowing cyclohexanol to react with potassium dichromate (K2Cr2O7) in the presence of acid. However, some of the cyclohexanol will undergo an elimination reaction because of the acid present and form cyclohexene. Your question is a good example of why it is often important to consider how the reactants should be mixed to get the best results. You would not want to add all of the cyclohexanol to the dichromate solution since performing the reaction that way would maximize the percentage of cyclohexene formed. To limit the extent of the competing elimination reaction, one would want to: 1) Look up the oxidation of secondary alcohols to ketones using potassium dichromate in the literature in order to a. determine the amount of acid needed, and don't use more acid than is necessary, and b. try to find the optimum temp. at which to carry out the reaction. The lower the acid concentration, the less cyclohexene that will be formed. 2) Slowly add the alcohol to a rapidly stirring mixture of an aqueous solution of acidified potassium dichromate. 3) An aqueous solution of acidified potassium dichromate will get warm when it is prepared. It would be best to allow it to cool back to room temp. before beginning the reaction. Once the ketone is formed, it will not react further with acidic dichromate because ketones are difficult to oxidize and dichromate is not a strong enough oxidizer.
When two monosaccharides undergo a dehydration synthesis reaction which type of molecule is formed?
There are a few! A double sugar is called a disaccharide. :) Lactose is one. (This is formed by the synthesis of galactose and glucose, which are monosaccharides.) Maltose is another. (It is formed by two glucose hooking up.) Sucrose is yet another. (Formed by fructose and glucose.) They are all formed through the removal of water, or dehydration synthesis. Hope this helps!!
Ethers can be formed by what reaction?
Williamson synthesis reaction.
Why Gabriel phthalimide synthesis is preferred for synthesising primary amines?
In gabriel synthesis on primary amines are formed. Secondary and tertiary amines are not formed this yields in pure rimary amine product. Hence Gabriel phthalimide synthesis is preferred for synthesising primary amines
When does a disccharide form?
A disaccharide is formed from two monosaccharides by a reaction called dehydration synthesis.
How can cyclohexene be formed as a byproduct in the synthesis of cyclohexanone?
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How cyclohexene mignt be formed as a byproduct in the synthesis of cyclohexanone?
One of the common ways to synthesize ketones is by oxidizing secondary alcohols. Cyclohexanone can be easily prepared from cyclohexanol (or hydroxycyclohexane - same thing) by allowing cyclohexanol to react with potassium dichromate (K2Cr2O7) in the presence of acid. However, some of the cyclohexanol will undergo an elimination reaction because of the acid present and form cyclohexene. Your question is a good example of why it is often important to consider how the reactants should be mixed to get the best results. You would not want to add all of the cyclohexanol to the dichromate solution since performing the reaction that way would maximize the percentage of cyclohexene formed. To limit the extent of the competing elimination reaction, one would want to: 1) Look up the oxidation of secondary alcohols to ketones using potassium dichromate in the literature in order to a. determine the amount of acid needed, and don't use more acid than is necessary, and b. try to find the optimum temp. at which to carry out the reaction. The lower the acid concentration, the less cyclohexene that will be formed. 2) Slowly add the alcohol to a rapidly stirring mixture of an aqueous solution of acidified potassium dichromate. 3) An aqueous solution of acidified potassium dichromate will get warm when it is prepared. It would be best to allow it to cool back to room temp. before beginning the reaction. Once the ketone is formed, it will not react further with acidic dichromate because ketones are difficult to oxidize and dichromate is not a strong enough oxidizer.
Are proteins formed by dehydration synthesis?
No; they are formed by translation. Carbohydrates are formed by dehydration synthesis.
In the metabolism of protein the byproduct urea is formed in the?
liver
How can be dehydration synthesis reversed?
In chemistry, condensation reactions are when covalent bonds are formed between molecules and a water molecule is generated as a byproduct. The reverse of this process is hydrolysis, whereby water is consumed in order to cleave a covalent bond.
Are there cis-trans isomers formed when aqueous bromine react with cyclohexene?
No. When bromine (aq) reacts with cyclohexene, the compound is now saturated, and will no longer have C=C bonds, thus it is unable to exhibit cis-trans isomerism.
What is a macro molecule formed by?
A macromolecule is formed by dehydration synthesis (condensation reaction).
When two monosaccharides undergo a dehydration synthesis reaction which type of molecule is formed?
There are a few! A double sugar is called a disaccharide. :) Lactose is one. (This is formed by the synthesis of galactose and glucose, which are monosaccharides.) Maltose is another. (It is formed by two glucose hooking up.) Sucrose is yet another. (Formed by fructose and glucose.) They are all formed through the removal of water, or dehydration synthesis. Hope this helps!!
What type of product is formed from the reaction of an organic acid and an alcohol?
an ester and byproduct is water
The genetic code for protein synthesis is found within what?
The genetic code for protein synthesis is formed from Dna.
Are covalent bonds formed in dehydration synthesis?
Yes.
Ethers can be formed by what reaction?
Williamson synthesis reaction.
