The alkene R-CH=CH_2 reacts readily with B_2H | vedclass

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(B) The reaction of an alkene with diborane $(B_2H_6)$ followed by oxidation with alkaline hydrogen peroxide $(H_2O_2/OH^-)$ is known as hydroboration

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$R-CH_2-CH_2-OH$

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(B) The reaction of an alkene with diborane $(B_2H_6)$ followed by oxidation with alkaline hydrogen peroxide $(H_2O_2/OH^-)$ is known as hydroboration-oxidation. This reaction results in the anti-Markovnikov addition of water across the double bond,yielding a primary alcohol. $6R-CH=CH_2 + B_2H_6$ $\rightarrow 2(R-CH_2-CH_2)_3B$ $\xrightarrow{H_2O_2/OH^-} 6R-CH_2-CH_2-OH + 2H_3BO_3$.

The alkene $R-CH=CH_2$ reacts readily with $B_2H_6$ and forms the product $B$,which on oxidation with alkaline hydrogen peroxide produces:

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