2,6-dimethylpyridine; oxoammonium salt in dichloromethane T=20°C; Sealed tube;

1.1: tetrahydrofuran / 0.17 h / 0 °C / |Inert atmosphere; |Sealed tube 1.2: 0 - 20 °C / |Inert atmosphere; |Sealed tube 1.3: 0 - 20 °C / |Inert atmosphere; |Sealed tube 2.1: oxoammonium salt; 2,6-dimethylpyridine / dichloromethane / 20 °C / |Sealed tube View Scheme