| Company Name: |
Santai Labs, Inc.
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| Tel: |
519-85601385 |
| Email: |
marketing@santailabs.com |
| Products Intro: |
Product Name:3-bromo-5-nitrobenzene-1,2-diamine
CAS:69399-60-6
Purity:97% HPLC Package:25G;100G;1kg;25kg
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| Company Name: |
LinkChem Co.,Ltd.
|
| Tel: |
021-021-58950110 13124863828 |
| Email: |
sales@linkchem.cn |
| Products Intro: |
Product Name:3-bromo-5-nitrobenzene-1,2-diamine
CAS:69399-60-6
Purity:90% Package:1g;5g;10g;100g
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| | 3-Bromo-5-nitrobenzene-1,2-diamine Basic information |
| | 3-Bromo-5-nitrobenzene-1,2-diamine Chemical Properties |
| Melting point | 203-205 °C | | Boiling point | 426.5±40.0 °C(Predicted) | | density | 1.901±0.06 g/cm3(Predicted) | | pka | 0.81±0.10(Predicted) |
| | 3-Bromo-5-nitrobenzene-1,2-diamine Usage And Synthesis |
| Synthesis | Sodium sulfide nonahydrate (96 g, 400 mmol) and sulfur (12.8 g, 400 mmol) in a mixture of water and ethanol was heated at reflux under nitrogen for 1 h. The solution was added to a stirred suspension of 2-bromo-4,6-dinitrobenzenamine (104.8 g, 400 mmol) and ammonium chloride (20.8 g, 400 mmol) in a solution of 400 mL of water and 700 mL of ethanol. The mixture was stirred at 65° C for 30 min. Then 400 mL of 2N NaOH solution was added dropwise during 30 min and the mixture was then stirred for 15 minutes at 65° C. After cooling, the mixture was poured onto a mixture of 2N HCl (400 mL), 1 kg ice and 1 L of water, stirred for 15 min to complete the reaction and extracted with ethyl acetate (1 L*3). The combined organic layers were dried over sodium sulphate and evaporated to give the crude product (3-Bromo-5-nitrobenzene-1,2-diamine) (90 g, 97%) as a rust-colored solid, which was used for the next step without further purification. |
| | 3-Bromo-5-nitrobenzene-1,2-diamine Preparation Products And Raw materials |
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