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Pharmaceutical pyrrolidin-2-one derivatives: Pharmaceutical pyrrolidin-2-one derivatives. Pifferi, Giorgio; Pinza, Mario (I.S.F. S.p.A. 62613-82-5 and 6290-05-7 are cas registry numbers. These chemicals are also mentioned in this article., Italy). Ger. Offen. DE 2635853 24 Feb 1977, 23 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C07D207-12. PRIORITY: IT 75-26326 13 Aug 1975. DOCUMENT TYPE: Patent CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) 2-Pyrrolidinones (I; R = H, Ac, Me, H2C:CHCH2, Bz; R1 = H, Et; n = 0, 1, 2), affecting memory and learning ability in rats and mice, are prepd. Reaction of EtO2CCH2COCl with HN(CH2CO2Et) gives EtO2CCH2CON(CH2CO2Et)2 which on treatment with Na in EtOH gives Et 3-(carbethoxy)-4-hydroxy-2-oxo-3-pyrroline-1-acetate (II). Hydrolysis and decarboxylation of II in refluxing H2O-MeCN gives Et 2,4-dioxo-1-pyrrolidineacetate which is reduced to the 4-hydroxy deriv. (III) with NaBH4. Reaction of III with NH3 in MeOH gives I (R = R1 = H, n = 1). .

Fungicidal-N-(3-halo-2,6-dinitro-4-trifluoromethylphenyl)-pyrrolidones: Fungicidal-N-(3-halo-2,6-dinitro-4-trifluoromethylphenyl)-pyrrolidones. Schneider, Louis; Graham, David E.Several substances are used for example 67294-46-6 which is its cas registry number. (GAF Corp., USA). U.S. US 4086356 25 Apr 1978, 3 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: A61K031-40. NCL: 424274000. APPLICATION: US 77-765904 7 Feb 1977. DOCUMENT TYPE: Patent CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Section cross-reference(s): 5 Pyrrolidines I (R = halo; Z = O, S; R1 = H, alkyl), useful as fungicides, were prepd. 2-Pyrrolidinone was treated with NaOMe and 2,4-dichloro-3,5-dinitrobenzotrifluoride to give I (R = Cl, Z = O, R1 = H), which exhibited fungicidal activity. 67294-46-6 is just another one chemical used in this study. ..