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[ CAS No. 81-48-1 ]

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Chemical Structure| 81-48-1
Chemical Structure| 81-48-1
Structure of 81-48-1 * Storage: {[proInfo.prStorage]}

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Product Details of [ 81-48-1 ]

CAS No. :81-48-1 MDL No. :MFCD00019148
Formula : C21H15NO3 Boiling Point : 520.7°C at 760 mmHg
Linear Structure Formula :- InChI Key :N/A
M.W :329.35 g/mol Pubchem ID :6680
Synonyms :

Safety of [ 81-48-1 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P261-P305+P351+P338 UN#:N/A
Hazard Statements:H315-H319-H335 Packing Group:N/A
GHS Pictogram:

Application In Synthesis of [ 81-48-1 ]

  • Upstream synthesis route of [ 81-48-1 ]
  • Downstream synthetic route of [ 81-48-1 ]

[ 81-48-1 ] Synthesis Path-Upstream   1~11

  • 1
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YieldReaction ConditionsOperation in experiment
84.7%
Stage #1: With hydrogenchloride; benzoic acid; zinc In methanol; water at 60 - 116℃; for 19 h;
Stage #2: With oxygen In methanol; water at 60℃;
In a 500 mL pressure vessel equipped with a mechanical stirrer and a thermometer, 40 g of soft water was added,Hydrochloric acid 15 g,, 40 g of 4-dihydroxyanthraquinone, 25 g of p-toluidine (purchased), 160 ml of methanol, 11 g of benzoic acid,6 g of polyethylene glycol,Slowly heated to 60 ° C, the slow addition of zinc powder 5g,The temperature at 70 ° C for 2 hours, and then heated to 90 ° C for 8 hours, then continue to constant temperature to 110 ° C for 6 hours,Continue heating to 116 ° C for 3 hours.After completion of the reaction, the temperature was lowered to 60 ° C. After passing the air, the intermediate was rapidly oxidized and filtered. The filter cake was washed successively with methanol and hot water, and 50 g of solvent violet 13 was obtained. The purity was 93percent, the yield was 84.7percent, DC was -0.5, DH was -0.3 and the intensity was 99.50
Reference: [1] Patent: CN105237417, 2016, A, . Location in patent: Paragraph 0059-0060
[2] Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 19, p. 1956
  • 2
  • [ 99-99-0 ]
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  • [ 81-48-1 ]
YieldReaction ConditionsOperation in experiment
88.3% With hydrogen; boric acid; iron In methanol at 60 - 1000℃; for 8 h; Autoclave; Inert atmosphere In a 500 mL autoclave equipped with a mechanical stirrer and a thermometer, 60 g of methanol, 1, 4-dihydroxyanthraquinone24 g of p-nitrotoluene, 2 g of iron powder and 4 g of boric acid, and the inside of the autoclave was purged with nitrogen, followed by heating to 60 ° C with stirringHydrogenation was started and hydrogenation was carried out at a temperature of 60 ° C. When the reaction system stopped hydrogen absorption, control at 65 ° CInsulation reaction, hydrogen absorption enhancement, heat reaction time of 3h. After the completion of the reaction, the temperature was raised to 10 ° C, followed by condensation reaction with TC, & Lt;The reaction time was 5h. After the reaction, cool to 60 ° C, Pressure relief, access to air, the rapid oxidation of intermediates, and finally add hydrochloric acid 16g beating, beating temperature of 65 ° C, filtration, washing,Dried to give the desired product 50. 5 g of solvent violet 13 with a purity of 96percent, a yield of 88.3percent, a DC of 2.5, a DH of 2.0 and an intensity of 100.50.
Reference: [1] Patent: CN105237417, 2016, A, . Location in patent: Paragraph 0055-0056
  • 3
  • [ 104-13-2 ]
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  • [ 17648-03-2 ]
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Reference: [1] Patent: US2002/58711, 2002, A1,
  • 4
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  • [ 540-23-8 ]
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Reference: [1] Patent: US4182612, 1980, A,
  • 5
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  • [ 128-80-3 ]
Reference: [1] Patent: US2008/139830, 2008, A1, . Location in patent: Page/Page column 5
[2] Patent: US2008/139830, 2008, A1, . Location in patent: Page/Page column 5-6
  • 6
  • [ 98624-30-7 ]
  • [ 81-48-1 ]
Reference: [1] Journal of Organic Chemistry USSR (English Translation), 1985, vol. 21, # 5, p. 983 - 989[2] Zhurnal Organicheskoi Khimii, 1985, vol. 21, # 5, p. 1079 - 1086
  • 7
  • [ 17648-03-2 ]
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  • [ 81-48-1 ]
Reference: [1] Chem. Zentralbl., 1904, vol. 75, # II, p. 339
[2] Chem. Zentralbl., 1908, vol. 79, # I, p. 2179
  • 8
  • [ 78119-57-0 ]
  • [ 81-48-1 ]
Reference: [1] Journal of Organic Chemistry USSR (English Translation), 1985, vol. 21, # 5, p. 983 - 989[2] Zhurnal Organicheskoi Khimii, 1985, vol. 21, # 5, p. 1079 - 1086
  • 9
  • [ 81-64-1 ]
  • [ 540-23-8 ]
  • [ 81-48-1 ]
Reference: [1] Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 19, p. 1956
  • 10
  • [ 82-42-8 ]
  • [ 106-49-0 ]
  • [ 81-48-1 ]
Reference: [1] Yuki Gosei Kagaku Kyokaishi, 1959, vol. 17, p. 705,707[2] Chem.Abstr., 1960, p. 1853
  • 11
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Reference: [1] Patent: US2419405, 1943, ,
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