Consider the following pericyclic reaction. CH3 H3C H. `H H3CO/ H3C H3CO `CH3 K L (a) Name the type of pericyclic process (b) Using frontier molecular orbital theory, predict if the above reaction will occur thermally or photochemically. In your answer you need to identify the HOMO and LUMO orbitals of both compound J and compound K and clearly show the HOMO/LUMO interaction which would lead to product L.
Reactions of Ethers
Ethers (R-O-R’) are compounds formed by replacing hydrogen atoms of an alcohol (R-OH compound) or a phenol (C6H5OH) by an aryl/ acyl group (functional group after removing single hydrogen from an aromatic ring). In this section, reaction, preparation and behavior of ethers are discussed in the context of organic chemistry.
Epoxides
Epoxides are a special class of cyclic ethers which are an important functional group in organic chemistry and generate reactive centers due to their unusual high reactivity. Due to their high reactivity, epoxides are considered to be toxic and mutagenic.
Williamson Ether Synthesis
An organic reaction in which an organohalide and a deprotonated alcohol forms ether is known as Williamson ether synthesis. Alexander Williamson developed the Williamson ether synthesis in 1850. The formation of ether in this synthesis is an SN2 reaction.
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