dienophilic

Dienophilic is a term used in organic chemistry to describe a reaction in which a diene (a molecule with two double bonds) reacts with a dienophile (a molecule with a double bond or a triple bond) to form a cyclic compound. This type of reaction is a specific subset of pericyclic reactions, which involve the concerted movement of electrons in a cyclic transition state. The dienophilic reaction is characterized by the formation of a new sigma bond and the breaking of two pi bonds, resulting in the creation of a cyclic system. The reaction is typically facilitated by electron-withdrawing groups on the dienophile, which stabilize the developing charges in the transition state. Dienophilic reactions are widely used in synthetic organic chemistry for the construction of complex organic molecules.