反应条件
1: 1.) H2SO4, 2.) 70 percent aq. AcOH / 1.) 23 deg C, 24 h, 2.) 40 deg C, 2 h 2: CHCl3 / 3 h / 23 °C 3: sodium methoxide / tetrahydrofuran / 4 h / 23 °C 4: 82 percent / CuI / tetrahydrofuran / 3 h / -40 to 0 deg C 5: triphenylphosphine, diethyl azodicarboxylate, diphenylphosphoryl azide / toluene / 12 h / 0 to 23 deg C 6: 40 percent aq. acetic acid / 3 h / 90 °C 7: hydrogen / 10 percent Pd/charcoal / ethyl acetate; methanol / atmospheric pressure 8: 82 percent / N-ethyl-N'-(dimethylaminopropyl)carbodiimide hydrochloride, triethylamine, 1-hydroxybenzotriazole hydrate / dimethylformamide / 12 h View Scheme
参考文献
Ghosh, Arun K.; McKee, Scan P.; Thompson, Wayne J.
Tetrahedron Letters, 1991 , vol. 32, # 41 p. 5729 - 5732
