2) Construct two charts like the ones below for each reaction (one for 1-bromope
ID: 576022 • Letter: 2
Question
2) Construct two charts like the ones below for each reaction (one for 1-bromopentane and one for 2-bromopentane). Check the boxes according to which mechanism is favored based on the reaction conditions specified. Tally up the checks at the bottom of each chart and determine which of the four mechanisms would be expected to occur. Refer back to your textbook in Chapter 9 to review how each of the factors would influence the reaction pathway SN1 SN2 E1 E2 Factor SN1 SN2 E1 E2 Factor Strength Leaving Group Leaving Group Solvent Heat Heat L. G. Carbon LG,Carbon 3) Report the major findings from the GCMS data. Construct an organized table of retention times, peak area, and molecular weights for each of the two reactions that were run (for 1-bromopentane and 2-bromopentane). Using the GC/MS data obtained determine the major product for each reaction and explain your reasoning.Explanation / Answer
Organic reaction mechanism
2) for 1-bromopentane (primary alkyl halide) and 2-bromopentane (secondary alkyl halide) the table is as below,
1-bromopentane
Factor Sn1 Sn2 E1 E2
Strength Y Y
Leaving Y Y
group
Solvent Y Y
Heat Y Y
L.G.Carbon Y Y
Total 0 4 1 5
2-bromopentane
Factor Sn1 Sn2 E1 E2
Strength Y Y Y Y
Leaving Y Y Y Y
group
Solvent Y Y Y Y
Heat Y Y
L.G.Carbon Y Y
Total 3 4 4 5
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so as can be seen a primary alkyl halide undergoes only Sn2 or E2 reaction mechanism in all the case whereas, secondary alkyl halide may undergo all reaction mechanisms depending upon the reaction conditions.
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