反应条件
1: 1) glacial AcOH, Ac2O, 30percent HBr/AcOH, 2) 2,4,6-trimethylpyridine / 1) 0 deg C to r.t., 4 h, 2) 14 h, r.t. 2: 32.4 percent / 1N aq. HCl / acetone / 0.08 h / 20 °C 3: 97.5 percent / pyridine / CH2Cl2 / -15 deg C to 5 deg C View Scheme
参考文献
Tetrahedron, , vol. 48, # 47 p. 10249 - 10264