Hydrochloric Acid → 1-Methyl-5-p-toluoylpyrrole 2-acetamidoacetic acid

Participants

Reaction Steps

A mixture consisting of 4.45 grams (0.013 moles) of 1-methyl-5-p-toluoylpyrrole-2-acetamidoacetic acid ethyl ester (1-b), 50 ml of ethanol, 25 ml of THF and 19.5 ml (0.0195 moles) of 1N NaOH was kept under stirring at room temperature (20°-25° C.) for 1.5 hours. The mixture was then diluted with water to 300 ml and slowly acidified with 37% HCl. A solid product precipitated which, after filtration and drying, weighed 3.4 grams and was crystallized from ethanol thus giving 2.3 grams of a compound of formula ##STR23## having the following chemico-physical characteristics:

Provenance & Evidence