Elimination Flashcards

0
Q

Is E1 one or two step reaction?

A

Two step

proceeds through carbocation formation

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1
Q

Is E1 unimolecular or biomolecular and give me a bit of knowledge on the reaction rate?

A

Unimolecular

Reaction rate depends on substrate

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2
Q

Is E1 1st or 2nd order reaction?

A

1st order reaction

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3
Q

what is the rate equation of E1?

A

Rate = k[alkyl halide]

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4
Q

what does E1 prefer, tertiary carbocation or tertiary alkyl halides?

A

Tertiary carbocation

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5
Q

What solvent does E1 need?

A

Polar protic solent needed

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6
Q

does E1require a strong base?

A

it does not

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7
Q

What is the stereochemistry of E1?

A

Prefers E-isomers, less steric hindrance equal major product

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8
Q

Is E2 unimolecular or biomolecular? and would you be so kind to share a nugget of knowledge about the reaction rate?

A

Biomolecular

Rate depends on concentration of both substrate and base

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9
Q

is E2 one or two step?

A

one step mechanism

Base picks up acidic proton from B carbon

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10
Q

is E2 1st or 2nd order reaction?

A

2nd order reaction

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11
Q

what is the rate equation for E2?

A

Rate = k[alkyl halide][base]

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12
Q

what does E2 prefer, Tertiary alkyl halides or tertiary carbocation?

A

Tertiary alkyl halides

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13
Q

what does E2 solvent prefer?

A

prefers polar aprotic solvents so it does not form hydrogen bonds with the base
eg. dnso, acetonenitrile

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14
Q

is a strong base need by E2?

A

it is needed

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15
Q

what kind of product does E2 prefer and why?

A

needs to be anti periplaner = H and X on opposite sides

less chance of electron repulsion, and will favour alhene formation