Questions tagged [elimination]
Questions whose main focus is on E1, E2, E1cb, or any other type of elimination reaction.
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What constitutes something being designated as big, bulky in terms of SN2 vs E2
When deciding between $\mathrm{S_N2}$ and $\mathrm{E2}$ for primary and secondary alkyl halides, is there a particular method or molecular size or any other threshold, which allows us to designate ...
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Predicting product of amine elimination
From section 'Nitrogen Containing Compounds'
I spent quite a lot of time here but could not figure out the answer. It's not mentioned in my school text book either. The solution given in my book is:
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1,2-dibromopropane reaction with OH and NaNH2 [duplicate]
We have the reaction of the alkyl halide $\ce{CH3-CHBr-CH2Br}$ with 1) $\ce{OH-}$ 2) $\ce{NaNH2}$ The answer is propyne.
I am unable to understand why we have performed an elimination reaction here. ...
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What is the major product in the reaction of 2,3-dichlorobutane with sodium amide in liquid ammonia?
I am not able to decide which among 1,3-butadiene and 2-butyne is the major product of this reaction. Will there be even a major product out of the two or will there be a mixture?
According to me, ...
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E1 elimination and alkyne formation
Are E1 elimination reactions possible from a trans dihalide alkane (like 1,2-dibromoethane) all the way to the alkyne (like acetylene)? Or is only E2 possible from the alkene to alkyne? What is the ...
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Use of aqueous KOH and alcoholic KOH in dehydrohalogenation reactions [duplicate]
What is the difference between aqueous KOH and alcoholic KOH? How do they react differently in dehydrohalogenation?
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Why does this E2 reaction occur on the less substituted carbon?
In compound C it eliminates the beta hydrogen attached to the less substituted carbon, rather than attacking the beta hydrogen attached to the tertiary carbon. Why is this the case?
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Why does treatment of a geminal dihalide with sodium amide lead to an alkyne and not an allene?
I've come across the following problem in Klein's Organic Chemistry, 2nd edition:
However, I'm a little bit confused about why the terminal alkyne is produced. I believe that an allene should be ...
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Elimination of HCl from isomeric chlorocyclohexadienes
Which of these is most easily dehydrohalogenated?
a. 5-Chlorocyclohexa-1,3-diene (1)
b. 3-Chlorocyclohexa-1,4-diene (2)
c. 1-Chlorocyclohexa-1,4-diene (3)
d. Both 1 and 3
I encountered this question ...
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Origin of alkenes from Wurtz Reaction
According to Wikipedia:
Also, since the reaction involves free radical species, a side reaction occurs to produce an alkene. This side-reaction becomes more significant when the alkyl halides are ...
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What conditions would make SN1 products the major products over E1 products, and vice versa?
It seems that if a carbocation intermediate is formed through solvolysis, then the product(s) are going to always be a pretty even mix of SN1 and E1 products.
Are there any conditions that greatly ...
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Why does alcoholic KOH prefer elimination whereas aqueous KOH prefers substitution?
What is the basic difference between aqueous and alcoholic $\ce{KOH}$? Why does alcoholic $\ce{KOH}$ prefer elimination whereas aqueous $\ce{KOH}$ prefers substitution?
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What will be the product when 3,4-dibromocyclohexene is reacted with sodium followed by heating with selenium?
I'm tutoring few Class 12 students for their chemistry exams. I'm stuck with few problems. I don't know, if the key is wrong or I am wrong.
According to me product (A) must be the cyclic diene, ...
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