Sharp difference in the rate of formation and stability of the Diels–Alder reaction adducts with 2,3‐dicyano‐1,4‐benzoquinone and N‐phenylimide‐1,4‐benzoquinone‐2,3‐dicarboxylic acid

This work reports new studies of the activity and Diels–Alder kinetics of a series of dienophiles: tetracyanoethylene (1), 2,3‐dicyano‐p‐benzoquinone (10), and N‐phenylimide‐1,4‐benzoquinone‐2,3‐dicarboxylic acid (11). Rate differences are interpreted in terms of the donor–acceptor properties of the...

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