ChemicalBook CAS DataBase List 1-Amino-2-naphthol

1-Amino-2-naphthol synthesis

12synthesis methods

Product Name:1-Amino-2-naphthol
CAS Number:2834-92-6
Molecular formula:C10H9NO
Molecular Weight:159.18

550-60-7 Synthesis

550-60-7
70 suppliers
$45.00/50mg

2834-92-6
96 suppliers
$200.00/500 mg

Yield:2834-92-6 99%

Reaction Conditions:

with hydrogen in water at 20 - 50; for 1 h;Temperature;

Steps:

2.1; 2.2 2) Catalytic hydrogenation reaction Add
82.5g of the prepared 1-nitroso-2-naphthol to 825.0g of water, stir at room temperature until dissolved, and simultaneously open the pump C and hydrogen pressure reducing valve, pump C (flow rate is 15mL/min), Hydrogen gas flows into the tubular reactor after the pressure reducing valve. The tubular reactor is placed at 50°C with a residence time of 1h. The reaction liquid flows into the receiving bottle, and then it is rotovaped until the solution is saturated. It precipitates in ice water and is filtered to obtain white crystals. 73.1g, the yield was 99%, and its content measured by HPLC was 96.8%.

References:

Zhejiang University of Technology;Yu Zhiqun;Huang Jiajia;Xie Shitian;Su Weike CN111217764, 2020, A Location in patent:Paragraph 0011; 0032; 0035-0036; 0041; 0044-0045

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135-19-3 Synthesis