1) True or False: The nature of the carbocation becomes sp2 after being in the alkyl halide sp3. a) true b) false 2) How does the increase in alkyl groups attached to the reaction center affect the products? a) Products from E1 increase with the increase of the number and the size of alkyl groups attached to the reaction center. b) Products from E1 decrease with the increase of the number and the size of alkyl groups attached to the reaction center. c) Products from E1 increase with the decrease of the number and the size of alkyl groups attached to the reaction center. d) Products from E1 decrease with the decrease of the number and the size of alkyl groups attached to the reaction center. 3) Which mechanism is favored by increasing steric hindrance at the reaction center? a) E1 b) E2 c) E1cB d) none of the above 4) True or False: The rate of reaction in E1 mechanism is first order. a) true b) false  5) What happens to the stability of carbocation during E1 rearrangement? a) it becomes more stable b) it becomes less stable c) nothing changes  6) How is the HOMO viewed ? a) Nucleophilic or electron donating b) Electrophilic and accepting c) Both A and B 7) What is a Diels-Alder reaction? a) no need for initiating, no intermediate b) A type of cycloaddition reaction involving a conjugate and certain types of double and triple bonds 8) What is the Frontier a) escribes the highest-energy occupied and lowest-energy unoccupied molecular orbitals of a compound b) A theory that describes the highest-energy occupied and lowest-energy unoccupied molecular orbitals of a compound, known as HOMO and c) LUMO respectively 9) Orbital Theory? a) A theory that describes the highest-energy occupied and lowest-energy unoccupied molecular orbitals of a compound, known as HOMO and b) LUMO respectively 10) What determines the stereochemistry of pericyclic reaction products? a) Stereochemistry of reactants, number of double bonds in the reactants, and whether the reaction is thermal or photochemical b) Concerted reactions, no need for initiating, no intermediate, no ionic or free radical intermediate, highly stereoselective

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