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Explain the basic differences in the E1 & E2 mechanism, in which alkyl halide react with...

Explain the basic differences in the E1 & E2 mechanism, in which alkyl halide react with bases to produce Alkenes?

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Answer #1

E1 means uni molecular elimination reaction

it is a first order reaction

Tertery alkyl halides under go elimination via a E1 mechanism

this is two step mechanism

in step 1 formation of carbo cation

in step 2 removal of protons

polar protic solvents are preffered and mild base is syfficient

E2 mechanism means Bimolecular elimination reaction

it is a second order

it is a one step process

primary alcohol preffer the E1 mechanism

it is a concenrted mechanism

transition state is inter mediate

the basic require ment for the E2 mechanism is leaving group and proton must anti peri planar to each other

polar aprotic solvents are preferred and strong base is required

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