Reaction equation
[Na+].[CH2:2]([N:4]([CH2:9][CH3:10])[CH2:5][C:6]([O-:8])=[O:7])[CH3:3].S(=O)(=O)(O)O>O>[CH2:2]([N:4]([CH2:9][CH3:10])[CH2:5][C:6]([OH:8])=[O:7])[CH3:3]Participants
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 40 °C
Procedure
Powdery solid N,N-diethylglycine sodium salt (produced by Tokyo Kasei Kogyo K.K. Japan) was dissolved in deionized water. The solubility in water of the N,N-diethylglycine sodium salt was 34% by mass (20° C.). To 342 g of this aqueous 34% by mass solution, was added 98% by mass sulfuric acid to adjust the pH to 6.6. This aqueous solution was condensed at 90° C. under a reduced pressure until the N,N-diethylglycine sodium salt concentration in the solution reached 67% by mass. The condensed solution was cooled to 40° C. and was stirred for one hour. The deposited crystalline sodium sulfate was removed at 40° C. by using a Buchner vacuum filter. Thereby, an aqueous 67% by mass solution of N,N-diethylglycine was obtained in an amount of 125 g. The aqueous N,N-diethylglycine solution contained sodium sulfate at a concentration of 0.9% by mass.
Workup
- custom34% by mass (20° C.)
- customcondensed at 90° C. under a reduced pressure
- concentrationuntil the N,N-diethylglycine sodium salt concentration in the solution
- customThe deposited crystalline sodium sulfate was removed at 40° C.
- filtrationfilter
Sources & evidence
- ORD record
- ord-dbbf3a7d370140349713a722d8bad823
- Source dataset
- uspto-grants-2006_06
- Patent number
- US07056450B2
Linked notes
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