This reaction is the first step of the Wagner-Jauregg reaction when it occurs between diarylethylene and maleic anhydride.
This reaction is the first step of the Wagner-Jauregg reaction when it occurs between diarylethylene and maleic anhydride. One variation of it produces asymmetric heterocycles via aza- and oxo-modifications involving imines and aldehydes, respectively.  If one of the reactants is cyclic, the endo product will be favored due to kinetic control. A one-step intermediate leads to syn- addition in this cycloaddition reaction that is often thermodynamically favorable due to its conversion of two pi bonds into more stable sigma bonds.  For ten points, identify this substituted cyclohexene- producing reaction that won its namesakes the 1950 Nobel Prize and that occurs between a conjugated diene and a dieneophile.
This reaction is the first step of the Wagner-Jauregg reaction when it occurs between diarylethylene and maleic anhydride.
the {Diels-Alder} Reaction