EP 1572644 A1 20050914 - PROCESS FOR PRODUCING N-METHYL SUCCINIMIDE
Title (en)
PROCESS FOR PRODUCING N-METHYL SUCCINIMIDE
Title (de)
VERFAHREN ZUR HERSTELLUNG VON N-METHYLSUCCINIMID
Title (fr)
PROCÉDÉ DE PRODUCTION DE N-MÉTHYLE SUCCINIMIDE
Publication
Application
Priority
- US 0340106 W 20031216
- US 43546902 P 20021220
- US 10833603 A 20031210
Abstract (en)
[origin: WO2004058708A1] The invention includes methods of processing an initial di-carbonyl compound by conversion to a cyclic compound. The cyclic compound is reacted with an alkyating agent to form a derivative having an alkylated ring nitrogen. The invention encompasses a method of producing an N-alkyl product. Amonia content of a solution is adjusted to produce a ratio of ammonia to di-carboxylate compound of from about 1:1 to about 1.5:1. An alkylating agent is added and the initial compound is alkylated and cyclized. The invention includes methods of making N-methyl pyrrolidinone (NMP). Aqueous ammonia and succinate is introduced into a vessel and ammonia is adjusted to provide a ratio of ammonia to succinate of less than 2:1. A methylating agent is reacted with succinate at a temperature of from greater than 100 °C to about 400 °C to produce N-methyl succinimide which is purified and hydrogenated to form NMP.
IPC 1-7
IPC 8 full level
C07D 207/404 (2006.01); C07D 207/40 (2006.01)
CPC (source: EP)
C07D 207/267 (2013.01); C07D 207/404 (2013.01)
Citation (search report)
See references of WO 2004058708A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004058708 A1 20040715; WO 2004058708 B1 20040923; AU 2003297213 A1 20040722; EP 1572644 A1 20050914; EP 2266957 A1 20101229; EP 2269983 A1 20110105; EP 2269984 A1 20110105
DOCDB simple family (application)
US 0340106 W 20031216; AU 2003297213 A 20031216; EP 03814062 A 20031216; EP 10075386 A 20031216; EP 10075389 A 20031216; EP 10075390 A 20031216