Multi-step reaction with 5 steps
1.1: sodium hydrogencarbonate / N,N-dimethyl-formamide / 2 h / 20 °C
2.1: caesium carbonate / N,N-dimethyl-formamide / 2.5 h / 100 °C
3.1: N,N,N-trimethylbenzenemethanaminium dichloroiodate; acetic acid / dichloromethane; water / 18 h / 65 °C
4.1: borane-THF; (3aR)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole / tetrahydrofuran; toluene / 2 h / -15 °C
4.2: 20 °C
5.1: 2,6-dimethylpyridine / N,N-dimethyl-formamide / 0.83 h / 10 - 20 °C
With
2,6-dimethylpyridine; borane-THF; sodium hydrogencarbonate; caesium carbonate; N,N,N-trimethylbenzenemethanaminium dichloroiodate; acetic acid; (3aR)-1-methyl-3,3-diphenyl-tetrahydro-pyrrolo[1,2-c][1,3,2]oxazaborole;
In
tetrahydrofuran; dichloromethane; water; N,N-dimethyl-formamide; toluene;