4-Hydroxy-2-butanone synthesis
- Product Name:4-Hydroxy-2-butanone
- CAS Number:590-90-9
- Molecular formula:C4H8O2
- Molecular Weight:88.11
Yield:590-90-9 92.3%
Reaction Conditions:
with D-Prolin at 20; for 24 h;Inert atmosphere;Reagent/catalyst;
Steps:
1-7 Synthesis of 4-hydroxy-2-butanone catalyzed by D-proline
In a 2000ml three-necked flask with a thermometer, reflux condenser (with nitrogen protection on the upper part of the reflux tube) and mechanical stirring,500ml tetraethylene glycol dimethyl ether, 300g acetone (5mol),75g formaldehyde (2.5mol), 57.5g D-proline.Start the stirrer and react for 24 hours at room temperature.After the reaction is over, remove the stirrer and condenser,Change the reaction flask to a distillation device, and distill acetone under normal pressure. It takes about 2h.Then distill 203g of 4-hydroxy-2-butanone (105°C/50mmHg) under reduced pressure,Yield 92.3%, purity 98%
References:
CN112062664,2020,A Location in patent:Paragraph 0024-0044
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