Talk:Mod:jm3109

Overall, your analysis is rather lacking, and causes most of the lost marks.

"The dimer returns to a polymer upon heating." I don't think so.
Mixed up Jmols of 1 and 2.
Correct energies for all compounds.
You didn't give any analysis on the torsion energies of 1 and 2, other than mentioning the 1,4-strain.
So which one, 3 or 4, is the major product of hydrogenation of 2?

I would have liked to see the Jmol of the optimised structures for 9 and 10 here.
"due to s(C-H) orbital overlapping with p*(C=O) orbital when the carbonyl group is "down" providing stability" you need to show this on the molecule.
"Hyperstable alkenes": too brief! and "positioning of the double bond which gives a more cage like structure and decreasing the reactivity" isn't the reason for the stability. You need to analyse the hydrogenated product.

Correct choice of Me group
You didn't specify which method you think is the better choice for the job.
A/C and B/D are actually identical species, if you look at the structures.
Your A' structure is wrong in both MM2 and PM6. The OAc group is nowhere near the oxonium.
How does all these link to the diastereoselectivity?

You should cross-compare the experimental and calculated spectra to test the real ability of the technique to differentiate these isomers.
Correct identification of C7-8 and C1-2 in the two structures as the key carbons.
Were the IR frequencies corrected?