K. Krohn et S. Bernhard, TRANSITION-METAL-CATALYZED OXIDATION .8. 4-ALLYL-SUBSTITUTED 1,2-NAPHTHOQUINONES VIA TANDEM ORTHO-PHENOL OXYGENATION AND OXY-COPE REARRANGEMENT, Synthesis, (6), 1996, pp. 699
4-Allyl-1,2-naphthoquinones 3a-3d are prepared in one operation from 2
-allyl-1-naphthols 2a-2d involving tandem zirconium-catalyzed tert-but
yl hydroperoxide (TBHP) oxidation and oxy-Cope rearrangement.