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1. (WO2017021976) AN IMPROVED PROCESS FOR THE SELECTIVE PRODUCTION OF N-METHYL-2-PYRROLIDONE (NMP)
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/021976 International Application No.: PCT/IN2016/050141
Publication Date: 09.02.2017 International Filing Date: 17.05.2016
IPC:
C07D 207/267 (2006.01)
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
D
HETEROCYCLIC COMPOUNDS
207
Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
02
with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
18
having one double bond between ring members or between a ring member and a non-ring member
22
with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
24
Oxygen or sulfur atoms
26
2-Pyrrolidones
263
with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms
267
with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atom
Applicants:
COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH [IN/IN]; Anusandhan Bhawan, Rafi Marg New Delhi 110001, IN
Inventors:
GHOSH, Indrajit, Kumar; IN
JAIN, Suman, Lata; IN
KHATRI, Praveen, Kumar; IN
RAY, Siddharth, Sankar; IN
GARG, Madhukar, Onkarnath; IN
Agent:
TIWARI, Amrish; IN
SRIHARI, Saragur, Kasturirangan; IN
CHOPRA, Priyanka; IN
PANDEY, Shachindra Kumar; IN
TIKU, Deepa Kachroo; IN
SINGH, Ranjana; IN
Priority Data:
2353/DEL/201531.07.2015IN
Title (EN) AN IMPROVED PROCESS FOR THE SELECTIVE PRODUCTION OF N-METHYL-2-PYRROLIDONE (NMP)
(FR) PROCÉDÉ AMÉLIORÉ POUR LA PRODUCTION SÉLECTIVE DE N-MÉTHYL-2-PYRROLIDONE (NMP)
Abstract:
(EN) This invention relates to an improved process for the selective production of N-methyl pyrrolidone (NMP) from gamma-butyrolactone and monomethyl amine preferably in aqueous form in the presence of a catalyst under comparatively milder conditions than the processes well known in the prior art of literature. The process is economically viable as it provides higher yield and selectivity for NMP which reduces the cost of separation of NMP from GBL. The catalyst shows good recyclability without significant loss in catalytic activity and no frequent regeneration is required.
(FR) La présente invention concerne un procédé amélioré pour la production sélective de N-méthylpyrrolidone (NMP) à partir de gamma-butyrolactone et de monométhylamine, de préférence sous forme aqueuse en présence d'un catalyseur dans des conditions relativement plus douces que dans les procédés bien connus dans l'art antérieur de littérature. Le procédé est viable économiquement, car qu'il permet d'obtenir un rendement plus élevé et une sélectivité plus élevée pour la NMP, ce qui réduit le coût de séparation de la NMP à partir de la GBL. Le catalyseur présente une bonne aptitude au recyclage sans perte significative de l'activité catalytique et une régénération fréquente n'est pas nécessaire.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)