N-Methyl-2-pyrrolidone synthesis
- Product Name:N-Methyl-2-pyrrolidone
- CAS Number:872-50-4
- Molecular formula:C5H9NO
- Molecular Weight:99.13
Yield:872-50-4 99.9%
Reaction Conditions:
in water at 300; under 75007.5 Torr;Concentration;
Steps:
1.3
A methylamine aqueous solution F3 and γ-butyrolactone F1 in provided to the continuous reactor R, and the 300 °C temperature and 100 the reaction under pressure, low liquid hourly space velocity (LHSV) is 1.0. The reactor R through a separator after S, generated by this N-methyl pyrrolidone F4 and water F4 are separated from each other. The separated water F6 through one or a plurality of in the 200 °C temperature and 40 the operation of the separator under pressure to collect, and with a methylamine F2 the circulation enters reactor R again is mixed in an aqueous solution of methylamine of F3. Γ-butyrolactone with respect to to 1.01 provide excess of the molar ratio of the a methylamine. Conversion and yield (dependent upon the reactant concentration of a methylamine (MMA)) as shown in table 1 is shown in
References:
CN105906542,2016,A Location in patent:Paragraph 0037; 0038; 0042
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