Answer
Verified
351.9k+ views
Hint: $ 1 $ -ethyl cyclohexene is a cycloalkene in which ethyl group is substituted at the $ {C_1} $ carbon. Hydroboration-oxidation reaction is the addition of boron trihydride to an alkene further the addition of hydroxide replaces the $ B{H_2} $ group and substitutes the hydroxyl group. Different isomers were obtained when hydroboration-oxidation of $ 1 $ -ethyl cyclohexene is done.
Complete answer:
Stereoisomers are the chemical compounds that contain the same molecular formula, but there is a difference of direction of arrangement of atoms or groups in the molecule.
$ 1 $ -ethyl cyclohexene is a cycloalkene in which an ethyl group is substituted at the $ {C_1} $ carbon. Hydroboration is the reaction of addition of simple boranes like $ B{H_3} $ to alkene, which results in the addition of $ H $ and $ B{H_2} $ units leading to the formation of alkyl boranes.
Later this alkyl boranes when treated with hydrogen peroxide which is an oxidation reaction leads to the formation of alcohols as $ B{H_2} $ is replaced by hydroxide ion from hydrogen peroxide. There is no formation of intermediates as only the transition state was formed.
The hydroboration-oxidation of $ 1 $ -ethyl cyclohexene is:
Though the formed two products are with the same molecular formula, there is a difference in the arrangement of groups that leads to the formation of stereoisomers.
The product $ 1 $ is $ \left( {1S,2R} \right) - 2 - ethylcyclohexanol $
The product $ 1 $ is $ \left( {1R,2S} \right) - 2 - ethylcyclohexanol $ .
Note:
The overall reaction favours the anti-markovnikov's rule as the hydroxide group is attached to the carbon containing more number of hydrogen atoms. The addition of borane favours the syn-addition as both $ H $ and $ B{H_2} $ units were added at the same side of the double bond.
Complete answer:
Stereoisomers are the chemical compounds that contain the same molecular formula, but there is a difference of direction of arrangement of atoms or groups in the molecule.
$ 1 $ -ethyl cyclohexene is a cycloalkene in which an ethyl group is substituted at the $ {C_1} $ carbon. Hydroboration is the reaction of addition of simple boranes like $ B{H_3} $ to alkene, which results in the addition of $ H $ and $ B{H_2} $ units leading to the formation of alkyl boranes.
Later this alkyl boranes when treated with hydrogen peroxide which is an oxidation reaction leads to the formation of alcohols as $ B{H_2} $ is replaced by hydroxide ion from hydrogen peroxide. There is no formation of intermediates as only the transition state was formed.
The hydroboration-oxidation of $ 1 $ -ethyl cyclohexene is:
Though the formed two products are with the same molecular formula, there is a difference in the arrangement of groups that leads to the formation of stereoisomers.
The product $ 1 $ is $ \left( {1S,2R} \right) - 2 - ethylcyclohexanol $
The product $ 1 $ is $ \left( {1R,2S} \right) - 2 - ethylcyclohexanol $ .
Note:
The overall reaction favours the anti-markovnikov's rule as the hydroxide group is attached to the carbon containing more number of hydrogen atoms. The addition of borane favours the syn-addition as both $ H $ and $ B{H_2} $ units were added at the same side of the double bond.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Which are the Top 10 Largest Countries of the World?
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Difference Between Plant Cell and Animal Cell
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Give 10 examples for herbs , shrubs , climbers , creepers
Change the following sentences into negative and interrogative class 10 english CBSE
How do you graph the function fx 4x class 9 maths CBSE
Write a letter to the principal requesting him to grant class 10 english CBSE