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Hydroboration Reaction
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B2H6 is discussed in an efficient manner along with a multiple no. of examples showing the proper mechanism for the required reagent. It is an important reaction for the preparation of alkanes.

Sachin Rana is teaching live on Unacademy Plus

Sachin Rana
IIT Bombay | Taught three under 100 AIR in JEE Advanced | YouTube: Sachin Rana (180k+ subs) | Qualified NSEA | Passionate Teacher.

Comments
(45)
U
Unacademy user
according to markonikovs rule the negative part should attach to the carbon which contains less no of hydrogen and u didn't used any peroxide also.plz Bhai help
Jigar Chavda
3 years ago
it is applicable for two step rxn like E1 and also there is condition that there is no rearrangement of carbocation. addition to B2H6 is does not follow E1 rxn mechanism. Hence we cant apply markovnikov .
Jigar Chavda
3 years ago
it is applicable for two step rxn like E1 and also there is condition that there is no rearrangement of carbocation. addition to B2H6 is does not follow E1 rxn mechanism. Hence we cant apply markovnikov .
Jigar Chavda
3 years ago
it is applicable for two step rxn like E1 and also there is condition that there is no rearrangement of carbocation. addition to B2H6 is does not follow E1 rxn mechanism. Hence we cant apply markovnikov .
Jigar Chavda
3 years ago
it is applicable for two step rxn like E1 and also there is condition that there is no rearrangement of carbocation. addition to B2H6 is does not follow E1 rxn mechanism. Hence we cant apply markovnikov .
Jigar Chavda
3 years ago
it is applicable for two step rxn like E1 and also there is condition that there is no rearrangement of carbocation. addition to B2H6 is does not follow E1 rxn mechanism. Hence we cant apply markovnikov .
Jigar Chavda
3 years ago
it is applicable for two step rxn like E1 and also there is condition that there is no rearrangement of carbocation. addition to B2H6 is does not follow E1 rxn mechanism. Hence we cant apply markovnikov .
Satish Yadav
3 years ago
Well said @jigar :)
Manav Grover
3 years ago
bro here bh2 is so called -ve part that markonikovs rule tells about
Manav Grover
3 years ago
bro here bh2 is so called -ve part that markonikovs rule tells about
Manav Grover
3 years ago
bro here bh2 is so called -ve part that markonikovs rule tells about
Tech Time
2 years ago
The reaction still follows markonikovs rule as hydrogen is more electronegative than boron.
Vp
Love to see someone using complete mechanism approach rather than stupid tricks
Sachin Rana
3 years ago
Yes, thank you.
Vp
Vidyut phagetra
3 years ago
I have a doubt that to which group double bond attaches to? I think that double bond should get attached on BH2 as boron has less electronegativity than H.
Thanks a Ton !! My teacher just taught us the Hydroboration Oxidation reaction but missed out on this one.. keep teaching :-)
P
The method of using mechanism is really very much helpful . Thank you bayya your class has made this concept crystal clear.
how ch3cooh replaces bh2? mechanism?
Shlok Pandey
3 years ago
is that something related to stability of bh3
Vishant dagar
a year ago
Bh3 is electron deficient molecule..... Means nucleophile like ch3coo- can attack and make bond in its vacant orbital..... And H+WILL attached to ch2 - formed after remova......... Or
Aranya Smrity
2 months ago
here it's bh2 not bh3😶
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