Ammonia → HCID 10016371, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 129 g. (0.52 mole) of 5-(p-chlorobenzoyl)-1-methylpyrrole-2-acetonitrile and 88 g. (1.1 moles) of 50% sodium hydroxide solution in 800 ml. of ethanol and 500 ml. of water is stirred and refluxed for about 18 hours with slow evolution of ammonia. The solution is then cooled to about 50°C. and acidified by adding 110 ml. of concentrated hydrochloric acid. The mixture is cooled and the precipitated product, 5-(p-chlorobenzoyl)-1-methylpyrrole-2-acetic acid, is filtered and recrystallized from methanol, m.p. 193°-195°C. (dec.). A second crop is obtained upon concentration of the mother liquor for a total yield of about 67% of theoretical.

Provenance & Evidence