2-Bromo-2-nitroethanol synthesis
- Product Name:2-Bromo-2-nitroethanol
- CAS Number:5437-60-5
- Molecular formula:C2H4BrNO3
- Molecular Weight:169.96
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Yield:5437-60-5 99%
Reaction Conditions:
Stage #1: 2-nitro-1-ethanolwith sodium hydroxide in water at -10 - 0; for 0.333333 h;
Stage #2: with bromine in water;Temperature;
Steps:
2.1
(1)91.1 g of 2-nitroethanol was obtainedWas added to a four-neck flask equipped with a mechanical stirrer,Cooling control temperature -10 ~ 0 ,Stirring slowlyThe mass concentration was added168.0 g of a 25% aqueous sodium hydroxide solution,After completion of the addition, the reaction was continued for 20 minutes,Then 167.8 g of bromine was added dropwise,After completion of the reaction,Vacuum distillation and distillation separation2-bromo-2-nitro ethanol 168.3g,Yield 99.0%Content of 99.5%;
References:
CN105218474,2016,A Location in patent:Paragraph 0030; 0040
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