different between lactam vs pyrrolidone

English

lactam (plural lactams)

(organic chemistry) Any of a class of cyclic amides that are the nitrogen analogs of lactones, formed by heating amino acids; the tautomeric enol forms are known as lactims.

Greek prefixes indicate the ring size e.g. ?- 3-membered, ?- 4-membered.

lactám

Mohamed Hassan Kamil (2015) L’afar: description grammaticale d’une langue couchitique (Djibouti, Erythrée et Ethiopie)?^[1], Paris: Université Sorbonne Paris Cité (doctoral thesis)

pyrrolidine +? -one

pyrrolidone (plural pyrrolidones)

(chemistry) any of a class of heterocyclic ketones derived from a pyrrolidine; especially 2-pyrrolidone, the simplest ?-lactam

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