反应条件
2: 1) DMSO, trifluoroacetic anhydride, 2) Et3N / 1) CH2Cl2, -60 deg C, 3 h, 2) CH3Cl2, -60 deg C, 15 min, -60 deg C to 5 deg C 3: 80 percent / Na / methanol / 1 h / Ambient temperature View Scheme
参考文献
Tetrahedron, , vol. 55, # 11 p. 3255 - 3264