Orgo chem destroyer

[utdent20]

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On # 92. I really thought a would have been the answer, but looking at the solutions, those names of structures went over my head. i mean how can you remember the properties of those structures like vinyl anhydride and such. can some one give me an easier explanation of this problem.

# 94. Why are they in trans? I would have thought they would go Cis

107- Chiral cabrons includes the methyl and the OH but what about the ketone? why is that carbon not counted as a chiral?

 

[utdent20]

17 posts but no one knows the explanations?? 🙁

 

[klpennin]

Ketone C is not chiral because a chiral carbon has to be attached to 4 different groups. No double bonds!