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Identify the missing reactant/product in each of the following: i) 2 -" Bromopentane "+ alc.KOH rarr A+KBr (where A is the major product) ii)2'B'+2Na overset("dry either")rarr C_(4)H_(10)+2NaBr |
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Answer» Solution :Dehydrohalogenation reaction or `BETA-` elimination Alkyl halides undergo elimination reactions when they are heated with alcohol potash. In an elimination reactions, the electro negative halogen atom is removed along with a hydrogen from `beta-`carbon atom to forin an alkene. since `beta-`hydrogen atom is involved in the elimination, the reaction is called `beta-` elimination reaction. (i) `"2 BROMO pentane "+ alc KOH rarr" pent-2-en "+ KBr` ii) `2B+2Na overset("dry ether")rarr C_(4)H_(10)+2NaBr` `rarr 2C_(2)H_(5)Br+2Na overset("dry ether")rarr C_(4)H_(10)+2NaBr` |
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