反应条件
<b>Multi-step reaction with 6 steps<br /> </b>1: 1.) Mg / 1.) ether, 8 h, 2.) RT, 5 h<br />2: 1.) O<sub>2</sub>, tetraphenylporphine (TPP), 2.) Ph<sub>3</sub>P / 1.) CH<sub>2</sub>Cl<sub>2</sub>, irradiation, -70 deg C, 2 h, 2.) -70 deg C, 10 min<br />3: 80 percent / CrO<sub>3</sub>, AcOH / 1 h / Ambient temperature<br />4: 70 percent / NaBH<sub>4</sub>, CeCl<sub>3</sub>*7H<sub>2</sub>O / methanol / 0.5 h<br />5: 85 percent / pyridine / Ambient temperature<br />6: 60 percent / Et<sub>3</sub>N / 12 h / Heating<br /> <br />
参考文献
Kuo, Yueh-Hsiung; Shih, Kae-Shyang Heterocycles, 1990 , vol. 31, # 11 p. 1941 - 1949