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ChemicalBook CAS DataBase List 4-Methyl-3-nitrobenzene-1-sulfonyl chloride

4-Methyl-3-nitrobenzene-1-sulfonyl chloride synthesis

4synthesis methods
-

Yield:-

Reaction Conditions:

with chlorosulfonic acid in (2S)-N-methyl-1-phenylpropan-2-amine hydrate

Steps:

12 2-Nitrotoluene-4-sulfonyl chloride
EXAMPLE 12 2-Nitrotoluene-4-sulfonyl chloride 137.1 g (1.0 mol) of o-nitrotoluene are added dropwise to 535.9 g (4.6 mol) of chlorosulfonic acid and 2 g of sulfamic acid such that the temperature does not exceed 40° C. The mixture is then stirred at 40° C. for 1 hour and slowly heated to 105° C. It is then stirred at 105° C. for 6 hours, cooled and added dropwise to ice water at 0 to 5° C. The precipitated crystals are filtered off with suction and washed with ice water. 236.1 g of 2-nitrotoluene-4-sulfonyl chloride (water content 10.8%), corresponding to 210.6 g (89% of theory), having a melting point of 40° C. are obtained.

References:

Hoechst Aktiengesellschaft US5136043, 1992, A

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