This probably concerted, pericyclic reaction is kinetically endo-selective, which allows one to determine which cyclic nitrile will result from this reaction between an acrylonitrile and butadiene.
The reverse of this reaction was first studied by Kwart and King and was used by Vallée to synthesize enethiols; because that reverse reaction is heat- catalyzed, it must be considered when the products of the forward form of this reaction are analyzed by mass spectroscopy and that reverse reaction is uncreatively named the retro- version of this reaction. The use of a special class of reagents in this reaction was pioneered by Warner and Jauregg, who thus caused this reaction to produce benzenoids; one example of its usual reactants was discovered for use in this reaction by Danishevsky. This probably concerted, pericyclic reaction is kinetically endo-selective, which allows one to determine which cyclic nitrile will result from this reaction between an acrylonitrile and butadiene. For ten points, identify this cycloaddtion, which produces a cyclohexene from a conjugated alkene and a diene.
The reverse of this reaction was first studied by Kwart and King and was used by Vallée to synthesize enethiols; because that reverse reaction is heat- catalyzed, it must be considered when the products of the forward form of this reaction are analyzed by mass spectroscopy and that reverse reaction is uncreatively named the retro- version of this reaction.
the {Diels-Alder} reaction