Organic chem 1 - alcohol multiple choice. I want to double check all of them exc

Question

Organic chem 1 - alcohol multiple choice. I want to double check all of them except #22, thanks

The two molecules on the right are- enantiomers diastereomers atropisomers structural isomers identical What is the correct order of stability of the carbonations at the right? (more stable > less stable) 1 > 2 > 3 1 > 3 > 2 2 > 3 > 1 3>1>2 3>2>1 What is the major organic product obtained from the reaction below? 1 2 3 4 What is the major organic product obtained from the reaction below? 1 2 3 4 A reaction that can be used to break a carbon-carbon bond is- Swen oxidation hydroboration-oxidation oxymercuration-reduction Simmons-Smith reaction ozonolysis What is the best choice of reagent(s) to perform the transformation on the right? O_3; followed by (CH_3)_2S CH_3CO_3H O_3; followed by (CH_3)_2S HIO_4 O_SO_4; followed by NaHSO_3

Explanation / Answer

18)
Both compounds are mirror image of each other
Also they are not superimposible
Hence they are enantiomers

Answer: A

19)
1 is stabilised by resonance. So it is most stable

Between primary and secondary carbocation, secondary carbocation is more stable

hence order is
1 > 2 > 3

Answer: A

I am allowed to answer only 1 question at a time

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