4-NITRO-2-SULFOANILINE synthesis
- Product Name:4-NITRO-2-SULFOANILINE
- CAS Number:96-75-3
- Molecular formula:C6H6N2O5S
- Molecular Weight:218.19
96-67-3
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53250-82-1
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108-46-3
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96-75-3
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$13.00/25g
Yield:-
Reaction Conditions:
with sodium nitrite in hydrogenchloride;water
Steps:
106 EXAMPLE 106
EXAMPLE 106 An aqueous solution of 7 parts of sodium nitrite is added to 18.6 parts of 4-methylsulfonylaminoaniline in 50 parts by volume of 5N hydrochloric acid at 0°-5° C. The diazo solution is then poured into a stirred suspension, in 1,000 parts of water, of the coupling product obtained by diazotizing 23.4 parts of 2-hydroxy-3-amino-5-nitrobenzenesulfonic acid in a conventional manner and coupling the product to 11 parts of resorcinol in a medium rendered alkaline with sodium carbonate. After the addition, the pH is increased to 9, and the mixture is stirred until coupling is complete. A diazo solution obtained from 21.8 parts of 2-amino-5-nitrobenzenesulfonic acid in a conventional manner is then allowed to run into the mixture at pH 9-9.5, and stirring is continued until the coupling is complete.
References:
BASF Aktiengesellschaft US4491543, 1985, A
2942-06-5
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96-75-3
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$13.00/25g
100-01-6
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$11.19/25G
96-75-3
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96-73-1
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96-75-3
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7664-93-9
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7553-56-2
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$18.00/25g
100-01-6
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96-75-3
165 suppliers
$13.00/25g