反应条件
1: 41 g / l'acide para-toluene sulfonique / benzene / 5 h / Heating 2: potasse / H2O / 25 deg C, 0.5 h then 75 deg C, 0.5 h 3: 93 percent / HCl / CHCl3 4: Et3N / tetrahydrofuran / -20 - 0 °C 5: 1.) (i-C3H7)2NLi / 1.) ether, -60 deg C, 18 h, 2.) 20 deg C, 2 h, HCl 6: 70 percent / H2SO4 / acetone; H2O / 4 h / 45 °C View Scheme
参考文献
Tetrahedron, , vol. 37, p. 307 - 310
