pyrrolidone was produced at a yield of 60 1 h nmr 300 mhz cdcl 3 u03b43 32 2h t j 5 3 hz 2 77 3h s 2 30 2h t j 6 2 hz 1 99 1 91 2h m 6 45 g 75 mmol of gamma butyrolactone and 6 4 g 1 1 equiv 82 5 mmol 7 1 ml of methylamine 40 in water were placed in an autoclave and 250 ml 0 3 m of water was added thereto then the solution was allowed to react under a pressure of 53 3 bar at 270 u00b0 c for 1 hour after completion of the reaction the starting material gamma butyrolactone gbl was not observed on tlc and new spots were generated water was removed from the reaction product and the residue was extracted with chcl 3 the organic layer was dried using mgso 4 mgso 4 was filtered out and the filtrate was concentrated and analyzed by nmr as a result it could be seen that 6 92 g 69 8 mmol 93 of n methyl 2 pyrrolidone was produced 1 h nmr 300 mhz cdcl 3 u03b4 3 32 2h t j 5 3 hz 2 77 3h s 2 30 2h t j 6 2 hz 1 99 1 91 2h m.