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ChemicalBook CAS DataBase List 2-Cyanophenol
611-20-1

2-Cyanophenol synthesis

9synthesis methods
A method for preparing 2-cyanophenol, which comprises the following steps: preparing salicylaldoxime; performing dehydration; and performing hydrolytic-acidification reaction, wherein in the dehydration, anhydride is adopted as a dehydrating agent; and in the hydrolytic-acidification reaction, a hydrolyticreagent is 10 to 30 mass percent alkaline solution, and the temperature of the hydrolytic-acidification reaction is 100 to 150℃.
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Yield:611-20-1 98.8%

Reaction Conditions:

with phosgene;L-lysine in 1,2-dichloro-ethane at 80; for 4 h;Reagent/catalyst;Temperature;

Steps:

3 Example 3: Synthesis of o-hydroxybenzonitrile

To the reaction flask, 138.5 g (1.0 mol) of o-hydroxybenzamide,0.028 g of lysine, 700 g of dichloroethane,Warmed to 80 C, began to pass phosgene,3h access108.8 g (1.1 mol),Insulation reaction 1h;After completion of the reaction, about 350 g of ethylene dichloride was distilled off,Stop distillation, ice bath cooling, a crystalPrecipitation, continue stirring, down to 0 ° C, stirring 1h, filtered,Dried to give 118.8g,Content of 99.1%Yield 98.8% (Calculated as o-hydroxybenzamide).

References:

CN104610095,2016,B Location in patent:Page/Page column 4; 5

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