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ChemicalBook CAS DataBase List Fast Yellow G

Fast Yellow G synthesis

2synthesis methods
4-Methyl-2-nitrobenzenamine?diazo, and 3-Oxo-N-phenylbutanamide?coupling.
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Yield:2512-29-0 99%

Reaction Conditions:

with hydrogenchloride;sodium nitrite in water at 20; for 0.333333 h;Time;

Steps:

1 A method for synthesizing C.I. Pigment Yellow 1 by one-pot method promoted by solid particles, the steps are as follows:
10 g of polytetrafluoroethylene particles (about 70 mg/particle), 1.000 g (1 molar equivalent) of acetoacetanilide, 1.427 g (2.5 molar equivalent) of hydrochloric acid (36%), and 0.944 g (1.1 molar equivalent) were added to the reaction vessel.2-nitro-4-methylaniline, 0.448 g (1.15 molar equivalents) of sodium nitrite,10 mL of water was stirred at room temperature for 20 minutes with a modified mechanical stirring paddle (for improvement of mechanical stirring paddle: ACS Sustainable Chem. Eng. 2016, 4,6754-6762).The reaction was completed by thin-plate chromatography, filtered and rinsed with 3 mL of water, and the filter cake was dried to obtain 1.910 g of C.I.Pigment Yellow 1.The reaction mother liquor and rinse solution are reserved for the next cycle.The product yield is greater than 99%.

References:

Tianjin University;Li Chunbao;Feng Guangyuan CN108912723, 2018, A Location in patent:Paragraph 0037; 0038; 0039; 0051

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