3-chloro-benzenecarboperoxoic acid in dichloromethane T=0 - 20°C; Inert atmosphere;

1.1: lithium hexamethyldisilazane / tetrahydrofuran / 1 h / -78 °C / Inert atmosphere 1.2: 1.75 h / -78 - 20 °C / Inert atmosphere 2.1: diisobutylaluminium hydride / toluene / -78 °C / Inert atmosphere 3.1: pyridine; p-toluenesulfonyl chloride / 0 - 20 °C / Inert atmosphere 4.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 - 20 °C / Inert atmosphere View Scheme

1: diisobutylaluminium hydride / toluene / -78 °C / Inert atmosphere 2: pyridine; p-toluenesulfonyl chloride / 0 - 20 °C / Inert atmosphere 3: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 - 20 °C / Inert atmosphere View Scheme

1.1: n-butyllithium; diisopropylamine / tetrahydrofuran; N,N,N',N',N'',N''-hexamethylphosphoric triamide; hexane / 0.67 h / -78 °C / Inert atmosphere 1.2: 0.5 h / -78 °C / Inert atmosphere 2.1: lithium hexamethyldisilazane / tetrahydrofuran / 1 h / -78 °C / Inert atmosphere 2.2: 1.75 h / -78 - 20 °C / Inert atmosphere 3.1: diisobutylaluminium hydride / toluene / -78 °C / Inert atmosphere 4.1: pyridine; p-toluenesulfonyl chloride / 0 - 20 °C / Inert atmosphere 5.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 - 20 °C / Inert atmosphere View Scheme

1: pyridine; p-toluenesulfonyl chloride / 0 - 20 °C / Inert atmosphere 2: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 - 20 °C / Inert atmosphere View Scheme