(Solved): Part 4. Reactions of Cyclic Ethers Cyclic ethers can be good electrophiles for substitution reactio ...

Part 4. Reactions of Cyclic Ethers Cyclic ethers can be good electrophiles for substitution reactions. The epoxides (three-membered rings) have enough ring strain to be particularly reactive. - Draw mechanisms for the nucleophilic reactions. with these epoxides. Don't forget the acidic workup. - These are SN2 reactions. Would you expect nucleophilic attack at site a or site b in the reaction below? Explain your choice.