7. a. Which categories/classes does this compound belong to (for example, aldehyde, ketone)? b. Use electron pushing to demonstrate the resonance effect of the carbonyl group on 2 of the benzene ring.
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- Resveratrol is an antioxidant found in the skin of red grapes. Its anticancer, anti-inflammatory, and various cardiovascular effects are under active investigation. (a) Draw all resonance structures for the radical that results from homolysis of the OH bond shown in red. (b) Explain why homolysis of this OH bond is preferred to homolysis of either OH bond in the other benzene ring.Why does the methyl on the right have higher priority than the ethyl on the right when labeling the molecule as an E or Z isomer?Write an additional resonance contributing structure for each carbocation and state which of the two makes the greater contribution to the resonance hybrid. Classify each additional contributing structure as a 1°, 2°, or 3° allylic cation
- How to approach this problem?Why does the additional substituent on the 3rd carbon disappear?Assign the stereochemical configuration (E or Z) for the alkene below. Show your work, indicating clearly which groups are assigned high priority (e.g., through assigning the groups numbers, circling only the high priority groups, or labeling groups as high or low).
- 1)Chemistry students are taking an experimental course in organic chemistry at a public university. During an experiment involving conjugated dienes, some doubts arose when discussing the results obtained so far: (a) A student obtained two products from the reaction of 1,3-cyclohexadiene with Br2. His lab partner was surprised to get only one product from the reaction of 1,3 - cyclohexadiene with HBr. Explain these distinct results. (b) One student, seeing the discussion of colleagues, commented that she obtained two distinct products when reacting 1,3,5-hexatriene with HBr, with different yields just by changing the reaction temperature. Explain the results she obtained using reaction mechanism and based on kinetic and thermodynamic control involving conjugated dienes.4. In base-catalyzed halogenation of acetone, how do you explain why the second (and third) halogenation occurs on the same carbon but not on the carbon in the other methyl group?How does doubling [B:] affect the rate of an E1 reaction?
- Consider the hydrogenation reaction below, which replaces all with the appropriate number of carbon-to-hydrogen bonds C10H12+3H2 = C10H18 Assuming 100% hydrogenation, how many rings are present in C10H12?4. Draw a resonance structure for the triphenylmethyl cation, showing where else the cationic charge can be delocalized on one of the fully drawn out phenyl rings (Ph).1. How does the Iodomethane test mechanism work? 2. What is it used for?