Originally discovered by Pedersen while working for Dupont, these chemicals are commonly used as phase transfer (*) catalysts because of their ability to complex with cations in their central cavity.
Pecoro and Lah synthesized a metallic analogue of these compounds, which are commonly used as single-molecule magnets. TETA is used as the starting point of the synthesis of an aza analog of these compounds. Adding one of these compounds to a two-phase system of benzene and potassium permanganate generates "purple benzene". Originally discovered by Pedersen while working for Dupont, these chemicals are commonly used as phase transfer (*) catalysts because of their ability to complex with cations in their central cavity. These macrocyclic compounds are commonly synthesized by reacting oligoethylene glycols in a modification of the Williamson synthesis. For 10 points, name these molecules with alternating carbon and oxygen elements single-bonded in a fixed ratio, a special type of either.
Pecoro and Lah synthesized a metallic analogue of these compounds, which are commonly used as single-molecule magnets.
crown ethers [prompt on ether]