triethylamine in acetonitrile T=20°C;

1.1: tert-butylhypochlorite / chloroform / 3 h / 0 °C / |Inert atmosphere 1.2: 18 h / 0 - 20 °C / |Inert atmosphere 2.1: 3-chloro-benzenecarboperoxoic acid; potassium hydroxide / dichloromethane / 1.5 h / 0 °C / |Inert atmosphere 3.1: acetonitrile / 72 h / 50 °C View Scheme

1.1: tert-butylhypochlorite / chloroform / 3 h / 0 °C / |Inert atmosphere 1.2: 18 h / 0 - 20 °C / |Inert atmosphere 2.1: 3-chloro-benzenecarboperoxoic acid; potassium hydroxide / dichloromethane / 1.5 h / 0 °C / |Inert atmosphere 3.1: acetonitrile / 72 h / 45 °C View Scheme

1.1: tert-butylhypochlorite / tetrahydrofuran / 2 h / 0 °C / |Inert atmosphere 1.2: 18 h / 0 - 20 °C / |Inert atmosphere 2.1: 3-chloro-benzenecarboperoxoic acid; potassium hydroxide / dichloromethane / 1.5 h / 0 °C / |Inert atmosphere 3.1: 30 h / 20 - 45 °C View Scheme

1.1: tert-butylhypochlorite / chloroform / 3 h / 0 °C / |Inert atmosphere 1.2: 18 h / 0 - 20 °C / |Inert atmosphere 2.1: 3-chloro-benzenecarboperoxoic acid; potassium hydroxide / dichloromethane / 1.5 h / 0 °C / |Inert atmosphere 3.1: chloroform / 15 h / 20 °C View Scheme