Comments

Cyclopentadiene

Values are all correct. Great discussion!

Have a look at bond angles for the hydrogenation products around the sp2 carbon – this is a key reason for the differences seen!

Taxol

You have found the lowest energy conformations, however is there anything special in the structure that will lead to different conformations…? There is a ring… the conformations of this need to be investigated!

Good discussion

NMR

Why did you choose 17? You were told to use what you had learnt previously, which means 18 is the likely structure!

Which conformer of 17 have you modelled? Chair or boat? This could be the reason for the differences seen in the 1H in the literature.

13C NMR- Great – corrections due to sulphur taken in to account- nice!

Epoxide

Crystal structure

Great, lots of good information.

NMR

Fantastic, well done.

Rotations

Great! Good you ref Shi and Jacobsen

TS

Great.

QTAIM and NCI

Nicely done

Suggestion

Good, but tetra substituted alkenes are very hard to epoxidise!