(S)-Ethyl 2-hydroxypropionate synthesis
- Product Name:(S)-Ethyl 2-hydroxypropionate
- CAS Number:2676-33-7
- Molecular formula:C5H10O3
- Molecular Weight:118.1311
Yield:2676-33-7 97.32%
Reaction Conditions:
with zeolite in water; for 8 h;Reflux;
Steps:
1-3 Example 1:
The structural parameters of the reactive distillation partition wall column are shown in Table 1, and the filling parameters of the middle feed side reaction section loaded with the macroporous sulfonic acid resin catalyst are shown in Table 2. A certain amount of ethanol and zeolite are first added to the tower boiler reboiler, and the tower boiler reboiler is heated. After boiling, water and ethanol gas rise to the reaction distillation partition wall tower. Maintain the pressure at the top of the column at 20kPaA. When liquid is refluxed from the top of the column, fresh lactic acid and fresh ethanol with a mass content of 80% and 93% are fed into the reactive distillation partition wall column through a syringe pump, and the amount of fresh lactic acid is 50ml. / h, the molar ratio of alkyd feed was 1.1: 1, and after 8 hours of operation, the reactive distillation partition wall column reached steady state. Under these conditions, the water content of the ethyl lactate product from the tower kettle was 0.11%, and the yield of ethyl lactate was 97.32%.
References:
CN110698340,2020,A Location in patent:Paragraph 0039; 0040; 0046-0049
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