Four cationic instances o
Four cationic instances of this type of reaction are required for the synthesis of lanosterol, and molecules such as (2E, 4E)-2,4-Hexadiene can undergo a photochemical variety of this reaction through a disrotatory path. The thermal occurrence of this reaction in enediynes is known as the Begman variety, while types of this reaction catalyzed by compounds such as organotin include the Stille and Heck reactions. A reaction of this type which occurs in divynil ketones and is catalyzed by strong Lewis or Bronstedt acids is known as the Nazarov one while another example of this type of reaction produces a beta-keto ester through a mechanism similar to that of Claisen condensation and is called the Dieckmann reaction. For ten points, identify this type of reaction which results in the formation of a ring compound from a chain.
Four cationic instances of this type of reaction are required for the synthesis of lanosterol, and molecules such as (2E, 4E)-2,4-Hexadiene can undergo a photochemical variety of this reaction through a disrotatory path.
cyclization