Pinck; Hilbert
Journal of the American Chemical Society, 1935 , vol. 57, p. 2398,2400
Journal of the American Chemical Society, 1946 , vol. 68, p. 2014,2753
1: formaldehyd; ethylamine in water T=31°C; Cooling with ice; 2: methylamine in water T=3 - 5°C; Cooling with ice; 3: ethane-1,2-dial; acetic acid Product distribution / selectivity;