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Label the reactive features of the following reactants, select the most reactive feature, then
write and highlight what it needs. Also, state if a carbocation, carbon radical, or carbanion will
start to develop, and/or if
molecules.
bromobenzene + 2-chloro-3-methyl butane + AlCl3
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- Compounds containing a phenol group may work as ANTIOXIDANTS to prevent free radical damage. This is accomplished when a free radical (or UV light) encounters a phenol group, turning the phenol group into a radical. However, contrary to typical radical behavior, the structure of the phenol radical can neutralize (or quench) the unpaired electron. Specifically, the phenol structure neutralizes (or quenches) the unpaired radical electron by doing the following: taking the electron and The correct name (or abbreviation) of an example compound (discussed in the lecture videos) containing a phenol group with antioxidant properties is:Label the reactive features of the following reactants, select the most reactive feature, thenwrite and highlight what it needs. Also, state if a carbocation, carbon radical, or carbanion willstart to develop, and/or if aromatic character will be lost as a result of a reaction between thesemolecules.1,2-dimethylcyclopentene + Br2 in waterO Show how thep orbitals overlap to generate the T4* of cyclobutadiene. Which would have a smaller heat of hydrogenation? Circle your answer. Cyclic hydrocarbons which can be represented as structures containing alternating single and double bonds are called The MO energy diagram for cyclobutadiene is shown below. Fill in the n electrons for the neutral compound. Does cyclobutadiene react like a cation, anion or radical in reactions? 元3
- Explain the substituent effect on properties of selected molecules such as resonance stability, acidity, acidic properties, basic properties and carbocation stabilityb) Fill in the gaps by drawing the structures of the missing reagents, intermediates and/or products of the following electrophilic aromatic substitutions. Chemical formulas have been added for guidance. Step 1 Step 2 CH3 HNO3 H2 1. C6H5NO2 C,HgN H2SO4 `NO2 Pd/C 1 2 4 CH3 Br2/FeBr3 C3H;Bro 5 6 Using resonance structures, justify whether the acetyl group of compound 5 will direct the bromination reaction to the meta or ortho/para positions.Provide the bond line structure of a compound that is able to undergo Allylic lone pair and allylic carbocation resonance. Provide all resonance structures and appropriate arrows. Indicate which resonance state is most stable and why.
- Label the reactive features of the following reactants, select the most reactive feature, thenwrite and highlight what it needs. Also, state if a carbocation, carbon radical, or carbanion willstart to develop, and/or if aromatic character will be lost as a result of a reaction between thesemolecules. 2-methylcyclohexa-1,3-diene with Cl2Explosions occur when the rate of reaction increases dramatically over a short period of time. There are several types of explosions such as autocatalytic explosions, thermal explosions and branched chain explosions. State two (2) ways to prevent the occurrence of radical chain explosion in chemical laboratory.The electrophilic aromatic substitution of isopropylbenzene with Br₂ and FeBr, gives 1-bromo-4-isopropylbenzene. :Br: Product of 41-320- bromine and FeBr3 :Br: Fe + HBr FeBr3 Complete the curved-arrow mechanism, beginning with formation of the active brominating reagent. Remember to include lone pairs and formal charges where appropriate.
- If you want to disrupt the ability of radicals to generate more of themselves, particularly in scenarios where they could be harmful like auto-oxidation, you need to find a suitable scavenger reagent. Such materials, known as antioxidants, succeed when they can lead to a new, more stable radical species that terminates the chain without reacting, or by further consumption of reactive radicals to generate additional non-radical species. Which species(s) is or are radical-scavenging reagent(s)? * I just II, only III, only IV, only I and II, only II and III, only III and IV, onlyThe compound below is treated with N- bromosuccinimide (NBS) in the presence of light. 어 Draw both resonance structures for the radical produced by reaction of the compound with a bromine atom. Assume reaction occurs only at the weakest C-H bond. • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • Separate resonance structures using the → symbol from the drop-down menu. • Include all valence radical electrons in your answer.Draw arrow-pushing mechanisms for the following reactions. Include all lone pairs and all formal charges.