Circle the number that corresponds to the correct answer for each of the followi
ID: 961258 • Letter: C
Question
Circle the number that corresponds to the correct answer for each of the following five (5) quest S_n2 reactions occur with no stereochemical control partial stereochemical control complete stereochemical control Pyridinium chlorochromate (PCC) oxidation of a primary alcohol affords the corresponding carboxylic acid aldehyde ester Oxidation of 1-butanethiol with dilute hydrogen peroxide yields an alcohol a sulfide a disulfide Epoxides are reactive compounds primarily due to angle strain torsional strain steric strain Which of the following compounds is aromatic?Explanation / Answer
1. Sn2 reactions always occurs with complete stereochemistry control, because every time the nucleophile attacks, it always do for the opposite side of the leaving group.
2. PCC is a great nucleophile to oxydize alcohols. Depending of the type of alcohol, it can be oxydize to ketones or aldehydes. 2nd and 3rd alcohols gets oxydized to ketones, and 1st alcohols are oxydized to aldehydes.
3. You will get from here an alcohol.
4. I think in this case is because of it's torsional strain.
5. Compound b) is aromatic basically because it's double bonds are conjugate, and the rule 4n+2 it's done:
4n + 2 = 10 electrons --> n = 2
Hope this helps