1: potassium hydrogensulfate; 3,4-dihydroxy-1-tert-butylbenzene / 180 °C / 45 Torr 2: 3-chloro-benzenecarboperoxoic acid / tetrachloromethane / 4 h / 20 °C / |Cooling with ice 3: iodosylbenzene; tetrafluoroboric acid diethyl ether complex / dichloromethane; diethyl ether / |Inert atmosphere; |Molecular sieve View Scheme

potassium hydrogensulfate; 3,4-dihydroxy-1-tert-butylbenzene T=180°C; P=45.0045 Torr;