Answer for the each of the following pairs that reacts with sodium iodide in ace

Question

Answer for the each of the following pairs that reacts with sodium iodide in acetone. Cyclohexyl chloride or 1-chlorohexane. Assume that the reaction is S_N2 mechanism Which compound reacts at the faster ate? Explain the reason. 2-Chloropentane or 2-fluoropentane. Assume that the reactions will go through S_N2 mechanism. Which compound reacts at the faster ate? Explain the reason. 2-Bromo-2-methylhexane or 2-Bromo-5-methylhrxane If the reactions will go through S_N2 mechanism, which compound reacts at the faster rate? Explain the reason.

Explanation / Answer

1.

a. 1-chloro hexan eis more reactive thean cyclohexyl chloride

b.

since you alredy mentioned SN2

in SN2 reaction back side attack takes place

so sterically less hindered alky; ha;ides are preferrable

so primary alkyl halides are most prefferable for SN2 mechanism

cyclo hexyl chloride is secondary .

2.

a. Clholopentane is more reactive than fluoropentane

b.

this is because F is very poor leaving group than Cl

3.

2-bromo 5-methyl hexane is more reactive than 2-bromo-3-methyl hexane

b.

th is is because

steric hinderence shoul dbe less in case of 2-bromo 54-methyl hexane

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