1,2-Bis(4-bromophenyl)diazene synthesis
- Product Name:1,2-Bis(4-bromophenyl)diazene
- CAS Number:1601-98-5
- Molecular formula:C12H8Br2N2
- Molecular Weight:340.01
Yield: 70%
Reaction Conditions:
with hydrogenchloride;sodium carbonate;sodium nitrite in water; pH=5-7 for 2 h;
Steps:
1 Example 1: Preparation of 4,4'-dibromoazobenzene.
4-bromo aniline (10mmol) was dissolved in a solution of hydrochloric acid (6mol / L, 10mL) in theAqueous sodium nitrite solution (5 mL, containing 0.17 g of sodium nitrite)To starch potassium iodide test paper turns blue,The diazonium salt solution obtained was added to a solution of bromobenzene in hydrochloric acid (10 mmol)Sodium carbonate solution was adjusted to pH = 5 ~ 7 and the reaction 2h,After the reaction, filtration, drying,A red powdery solid was obtained (yield 70%),
References:
Wuzhongqu Qionglong Shan Tianzhong Macromolecule Materials Technology Institute;Zhou Chunyi CN106831777, 2017, A Location in patent:Paragraph 0020-0022
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