1,3-Dimethylbenzisochromene-5,10-quinone 14 is obtained in good yield when 2-(1′-hydroxyethyl)-3-prop-2″-enyl-1,4-naphthoquinone 13 is treated briefly with bisacetonitriledichloropalladium(II) in solution in dichloromethane at room temperature.
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Title
A model for the synthesis of naturally occurring benzisochromenequinones