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Which compound reacts with propene to form tripropyl borane?(a) Borane(b) Diborane(c) Boric acid(d) Sodium borohydrideI have been asked this question during an online exam.My question is from Alcohols and Phenols topic in chapter Alcohols, Phenols and Ethers of Chemistry – Class 12

Answer»

Right answer is (B) Diborane

For explanation I would say: Diborane (B2H6) reacts with alkenes to give trialkyl BORANES as a PRODUCT of successive addition. Firstly, CH3CH2CH2(BH2) is formed which reacts with propene to give (CH3CH2CH2)2BH, which further reacts with propene to finally give (CH3CH2CH2)B, which is tripropyl borane.



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