Multi-step reaction with 6 steps
1: 89 percent / K2CO3 / dimethylformamide / 3 h / 80 °C
2: 96 percent / NaN3, aluminium trichloride / tetrahydrofuran / 24 h / Heating
3: 1.) BH3, 2.) conc. HCl / 1) THF, 0 deg C, 10 min, rt, 20 min, 75 deg C, 3 h
4: 1.) NEt3, 2.) EDC, HOBT / 1) DMF, 10 min; 2) DMF, rt, 6 h
5: 1.) CF3COOH, 2.) NEt3, HOBT, EDC / 1) CH2Cl2, rt, 30 min; 2) CH2Cl2, rt, 10 h
6: 80 percent / BCl3 / CH2Cl2 / 1.5 h / 0 °C
With
hydrogenchloride; aluminium trichloride; sodium azide; borane; boron trichloride; potassium carbonate; benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; triethylamine; trifluoroacetic acid;
In
tetrahydrofuran; dichloromethane; N,N-dimethyl-formamide;
DOI:10.1016/S0040-4020(99)00171-4