... Keywords. Phenol oxidation; orthoquinones; catechols; dimethyldioxirane. References. 1; JK Crandall, DJ Batal, DP Sebesta, F Lin; J. Org. Chem., 56 (1991), p. 1153 and references therein. ... 11; M. Shimizu, H. Orita, T. Hayakawa, K. Takehira; For a similar conversion, see: Tetrahedron Lett., 30 (1989), p. 471. ...