in ethanol T=120°C; 0.333333 h; Microwave irradiation;

T=120 - 130°C; im geschlossenen Rohr;

1: With oxalyl dichloride in dichloromethane; dimethyl sulfoxide T=-78°C; Swern Oxidation; 1 h; 2: With triethylamine in dichloromethane; dimethyl sulfoxide Swern Oxidation; 0.25 h;

dipyridinium dichromate in dichloromethane 5 h; Ambient temperature;