The Brook rearrangement is used to produce silyl forms of these, while another type which often used for phase transfer catalysis are known as the "crown" variety.
Copper catalysis is used to effect the synthesis of aryl ones through the Ullman condensation. The compound BADGE, which has one of these functional groups, is an agonist for the PPAR gamma transcription factors. The Brook rearrangement is used to produce silyl forms of these, while another type which often used for phase transfer catalysis are known as the "crown" variety. Secondary ones have a tendency to spontaneously form peroxides. Cyclic ones are known as oxiranes, and when they come in three-membered rings, they are called epoxides. For 10 points, identify this functional group, which consists of two alkyl groups connected to an oxygen.
Copper catalysis is used to effect the synthesis of aryl ones through the Ullman condensation.
ethers