Multi-step reaction with 8 steps
1.1: sodium hexamethyldisilazane / tetrahydrofuran / 2 h / -30 - 50 °C
1.2: 2 h / 60 °C
1.3: pH 5
2.1: sodium hydroxide; water / tetrahydrofuran / 2.5 h / 50 °C
2.2: pH 5
3.1: oxalyl dichloride / N,N-dimethyl-formamide; chloroform / 1.17 h / Cooling with ice
3.2: 3 h / Cooling with ice
4.1: trifluoroacetic acid / chloroform / 4 h / 20 °C / Cooling with ice
4.2: pH 5 / Cooling with ice
5.1: oxalyl dichloride / N,N-dimethyl-formamide; chloroform / 1 h / Cooling with ice
5.2: 1 h / Cooling with ice
6.1: sodium hydroxide; water / tetrahydrofuran / 2.5 h / 20 °C / Cooling with ice
6.2: pH 5
7.1: 1,1'-carbonyldiimidazole / tetrahydrofuran / 2 h / 20 °C
7.2: 1 h / 20 °C
8.1: trichlorophosphate / 1 h / 20 °C / Cooling with ice
With
oxalyl dichloride; water; sodium hexamethyldisilazane; 1,1'-carbonyldiimidazole; trifluoroacetic acid; sodium hydroxide; trichlorophosphate;
In
tetrahydrofuran; chloroform; N,N-dimethyl-formamide;