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ChemicalBook CAS DataBase List DL-Serine
302-84-1

DL-Serine synthesis

12synthesis methods
DL-serine is obtained by complexing glycine under the catalysis of copper ions and then combining with formaldehyde under alkaline conditions, followed by acidification, ion exchange, and crystallization in ethanol.?
125310-61-4 Synthesis
Propanenitrile, 2-amino-3-hydroxy-

125310-61-4
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Yield:302-84-1 89.4%

Reaction Conditions:

with methylamine in water at 150; under 22502.3 Torr; for 10 h;Autoclave;Inert atmosphere;

Steps:

4 Example 4: Preparation of 2-amino-3-hydroxypropionic acid

A 2-L autoclave was charged with 86 g (1 mol) of 2-amino-3-hydroxypropionitrile, and 620 g of a 40% strength aqueous methylamine solution was added thereto.Water 1068g was added, nitrogen gas was charged to 3MPa, and the mixture was heated to 150°C for 10 hours. The reaction solution was concentrated under reduced pressure to recover a methylamine aqueous solution.Distillation residue was added 400g methanol 80 ° C reflux 2h, cooling, crystal precipitation, filtration, vacuum drying 120 ° C 4h 2-amino-3-hydroxypropionic acid, purity 98%, yield 89.4%.

References:

CN108003077,2018,A Location in patent:Paragraph 0058; 0059; 0072; 0073; 0074; 0075

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