v. Braun
Chemische Berichte, 1904 , vol. 37, p. 2920
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Albert
Chemische Berichte, 1909 , vol. 42, p. 549
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Merck
Patent: DE164365 ;
1: 90 percent / CHCl3 / 2 h / 110 °C 2: 75 percent / iron, conc. hydrochloric acid / ethanol; H2O / 3 h / Heating View Scheme
参考文献
Chemistry of Heterocyclic Compounds (New York, NY, United States), , vol. 23, # 5 p. 529 - 535
Khimiya Geterotsiklicheskikh Soedinenii, , vol. 23, # 5 p. 639 - 645