1: 89 percent / dioxane / 12 h / Heating 2: 57 percent / TMEDA, BuLi / diethyl ether; hexane / 1.) -10 deg C, 2 h, 2.) -78 deg C to 20 deg C 3: 87 percent / TFA / CH2Cl2 4: 86 percent / 12 h / 140 °C View Scheme
参考文献
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Chem. Fabr. v. Heyden
Patent: DE626717 , 1933 ;
Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 21, p. 531