ChemicalBook CAS DataBase List 4-NITRO-2-SULFOANILINE

4-NITRO-2-SULFOANILINE synthesis

5synthesis methods

Product Name:4-NITRO-2-SULFOANILINE
CAS Number:96-75-3
Molecular formula:C6H6N2O5S
Molecular Weight:218.19

96-67-3 Synthesis

96-67-3
201 suppliers
$15.00/1g

53250-82-1
55 suppliers
$60.00/50mg

108-46-3 Synthesis

108-46-3
770 suppliers
$10.00/10g

96-75-3
162 suppliers
$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

FullText

2942-06-5 Synthesis