Multi-step reaction with 10 steps
1: 82 percent / LDA / tetrahydrofuran / -78 °C
2: 82 percent / NaBH4 / dimethylsulfoxide / 80 °C
3: 100 percent / pyridine / Ambient temperature
4: NBS, BaCO3 / CCl4 / Heating
5: NaI / acetone / Heating
6: DBU, MS-4A / dimethylsulfoxide / 1 h / 80 °C
7: 1.) HgCl2, 2.) Et3N / 1.) acetone-H2O, reflux, 1 h, 2.) CH2Cl2, 0 deg C
8: 67 percent / NaBH4, CeCl3*7H2O / ethanol; CH2Cl2 / -78 °C
9: 94 percent / imidazole / dimethylformamide / 40 °C
10: 80 percent / KOH / ethanol / 0.33 h / Ambient temperature; pH=10
With
pyridine; 1H-imidazole; potassium hydroxide; sodium tetrahydroborate; N-Bromosuccinimide; cerium(III) chloride; 1,8-diazabicyclo[5.4.0]undec-7-ene; triethylamine; barium carbonate; sodium iodide; mercury dichloride; lithium diisopropyl amide;
In
tetrahydrofuran; tetrachloromethane; ethanol; dichloromethane; dimethyl sulfoxide; N,N-dimethyl-formamide; acetone;
DOI:10.1246/cl.1994.37