1: 2-aminopropan-1-ol; paraformaldehyde Cooling with water-bath1/3 part of formaldehyde was added;
2: paraformaldehyde T=65°C; Second 1/3 part of formaldehyde was added;
3: paraformaldehyde T=140°C; third part of formaldehyde was added at 65 degree;CHeating up to 95 degree;C until disoslution of formaldehydeHeating / reflux;
Attenburrow et al.
Journal of the Chemical Society, 1949 , p. 510,515
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Halverstadt et al.
Journal of the American Chemical Society, 1959 , vol. 81, p. 3618,3620