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ChemicalBook CAS DataBase List 2,3-dimethyl-6-nitro-2H-indazole
444731-73-1

2,3-dimethyl-6-nitro-2H-indazole synthesis

12synthesis methods
-

Yield:444731-73-1 97%

Reaction Conditions:

at 80; for 0.025 h;Flow reactor;Temperature;

Steps:

1.3; 2.3; 3.3; 1.3

(3) take by weighing the PZPN-2A of 100g, add stirring and dissolving in the dimethyl carbonate of 200g to form material 5, take by weighing the dimethyl carbonate of 200g and form material 6, adjust the flow velocity of slurry pump B to make the flow velocity of material 5 be 10ml/min, adjust the flow rate of flow pump D to make the flow rate of material 2 be 5ml/min, the reaction temperature is 80 , the mass ratio of PZPN-2A and dimethyl carbonate is 1: 2.0, and the reaction residence time is 90s, collected from The reaction solution flowing out of the outlet, after the reaction solution was added to water, precipitated a solid, and filtered to obtain PZPN-3A with a yield of 97% and a purity of 99%.

References:

CN114380748,2022,A Location in patent:Paragraph 0015; 0050; 0053; 0055; 0058; 0060; 0063; ...

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