Which of the following mellow corresponds to a substitution? propane rightarrow

Question

Which of the following mellow corresponds to a substitution? propane rightarrow 1,2-dibromopropanc 1- rightarrow propene propene rightarrow propane 1-isodopropane rightarrow 1-bromopropane The reaction of seri-butyl bromide. (CH_3)_3CBr, with methanol in an inert solvent proceeds by an S_2 1 mechanism to give lert-butyl methyl ether. (CH_3)_3 COCH_3. What is the effect of doubling the concentration of methanol on the rate of the reaction? the rate remains the same the rate decreases by a factor of 2 the rate increases by a factor of 2 the rate increases by a factor of 4 Which of the following alkyl halides undergoes the fastes S_n 2 reaction with sodium cyanide, NaCN? methyl iodide ethyl iodide 2-iodopropane teri-butyl iodide what is the major product formed upon treatment of ® 2-bromohexane with sodium cyanide? (R) 2-cyanohexane (S) 2-cyanohexane 1-hexene 2-hexene What is the major organic product obtained from the following reaction? 1 2 3 4 What is the major organic product(s) obtained from the following reaction? 1-hexyne 2-hexyne propene + proypyne propane + propyne What is (are) the major organic product(s) obtained from the following substitution reaction? only 1 only 2 only 3 a mixture of 1 and 2

Explanation / Answer

1.

option b

1-iodo propene is solide propene is gas (sublimation is soolide to gas)

2

option a is correct

because SNi reaction depends on concentration of alkyl halide

3

option a methyl iodode

because less steric crouded

4

option b

in SN2 reaction configuration will get reverse.

5

option b

because it is SN2 reaction

6

option b

7

option d

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