反应条件
1: 70 percent / 20percent aq. H2SO4 / 6 h / 100 °C 2: 2.) 4-formyl-1-methylpyridinium p-toluenesulfonate, 3.) 1,8-diazabicyclo<5.4.0>undec-7-ene (dbu), 4.) 5percent aq. oxalic acid View Scheme
参考文献
Banwell, Martin G.; Peters, Steven C.; Greenwood, Richard J.; Mackay, Maureen F.; Hamel, Ernest; Lin, Chii M.
Australian Journal of Chemistry, 1992 , vol. 45, # 10 p. 1577 - 1588