Kruse, C. G.; Troost, J. J.; Cohen-Fernandes, P.; Linden, H. van der; Loon, J. D. van
Recueil des Travaux Chimiques des Pays-Bas, 1988 , vol. 107, # 4 p. 303 - 310
1: 2-methoxy-phenylamine With hydrogenchloride; acetic acid; sodium nitrite in water T=0°C; 2: acetylacetone With sodium acetate in ethanol; water T=10 - 35°C;