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- Bicyclo-2,5-heptadiene can be prepared in two steps from cyclopentadiene and vinyl chloride. Provide a mechanism for each step.Identify the type of substitution mechanism (SN1, SN2) involved in the conversion of the alcohol shown into the corresponding alkyl halide.Addition of HBr to allene (CH2=C=CH2) forms 2-bromoprop-1-ene rather than 3-bromoprop-1-ene, even though 3-bromoprop-1-ene is formed from an allylic carbocation. Considering the arrangement of orbitals in the allene reactant, explain this result.
- Addition of HBr to allene (CH2 = C = CH2) forms 2-bromoprop-1-ene rather than 3-bromoprop-1-ene, even though 3-bromoprop-1-ene is formed from an allylic carbocation. Considering the arrangement of orbitals in the allene reactant, explain this result.When (CH3CH2)3CBr is added to CH3OH at room temperature, the major product is (CH3O)C(CH2CH3)3 and a minor product is CH3CH=C(CH2CH3)2. Propose a mechanism for the product that is formed by the substitution reaction. Use curved arrows to show the movement of electrons.The reaction CH3-CH=CH-CH3 CH3CH(I)CH(I)CH3 can be achieved with
- For each reaction, decide whether substitution or elimination (or both) is possible, andpredict the products you expect. Label the major products. chlorocyclohexane + NaOC(CH3)3 in (CH3)3COHfor each reaction give the expected substitution product and predict wether the mechanism will be first order (SN1) or second order (SN2) a) 2-chloro-2-methylbutane + CH3COOH b) isobutyl bromide + NaOMe c) 1-iodo-methylcyclohexane + CH3CH2OHFor each reaction, give the expected substitution product and predict whether the mechanism will be first order (SN1) or second order (SN2): a) 2-chloro-2-methylbutane + CH3COOH b) isobutyl bromide + NaOMe c) 1-iodo-1-methylcyclohexane + CH3CH2OH
- With POCl3, If dehydration is not possible, a substitution can occur instead. Provide a mechanism to account for the formation of this compound. Be sure that your steps are as simple as possible and conform to the conditions of the reaction.The reaction of 1-bromopropane and sodium hydroxide in ethanol occurs by an SN2 mechanism. What happens to the rate of this reaction under the following conditions? Q.)The volume of the solution in which the reaction is carried out is doubled.Compound A reacts with the reagents shown in the image. Write the mechanism, step by step, for the formation of product B. Note that B has the molecular formula C14 H18 O.