HBr. e EH White, J. Amer. Chem. Soc., 77, 6215 (1955). Monohydrate. methylacetamide and hydrogen chloride, reactionvessel walls became coated with small droplets which rapidly crystallized. Since it seemed reasonable that the liquid might have been the desired amide and the observed crystallization might have been due to increasing contamination with dimethylammonium chloride, vacuum distillation of the amide from the sides of the flask ...