Multi-step reaction with 7 steps
1.1: ammonia / methanol / 48 h / 65 °C / Sealed tube
2.1: 1,3,5-trichloro-2,4,6-triazine / N,N-dimethyl-formamide / 2 h / 0 °C
3.1: sodium methylate / methanol / 3 h / 35 °C / Inert atmosphere
3.2: 2 h / Reflux
4.1: potassium acetate / 2,2,2-trifluoroethanol / 16 h / Reflux; Inert atmosphere
5.1: Daicel Chiralpak IC, 30 mm × 250 mm, 5 μm / Resolution of racemate
6.1: N-Bromosuccinimide / tetrachloromethane / 1 h / 20 °C
7.1: N-ethyl-N,N-diisopropylamine / dichloromethane / 1 h / 20 °C
With
N-Bromosuccinimide; 1,3,5-trichloro-2,4,6-triazine; ammonia; sodium methylate; potassium acetate; N-ethyl-N,N-diisopropylamine;
In
methanol; tetrachloromethane; dichloromethane; 2,2,2-trifluoroethanol; N,N-dimethyl-formamide;
DOI:10.1021/acs.jmedchem.7b00083