4'-NITRO-BIPHENYL-4-SULFONYL CHLORIDE synthesis
- Product Name:4'-NITRO-BIPHENYL-4-SULFONYL CHLORIDE
- CAS Number:20443-75-8
- Molecular formula:C12H8ClNO4S
- Molecular Weight:297.71
91493-72-0
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Yield:20443-75-8 84%
Reaction Conditions:
with thionyl chloride;N,N-dimethyl-formamide for 4 h;Heating / reflux;
Steps:
16.2
The crude 4-nitrobiphenylsulfonic acid obtained above (31.00 g, 0.11 mol) was diluted with thionyl chloride (100 mL) and treated with a catalytic amount of DMF (0.1 mL). The reaction mixture was refluxed for 4 h, cooled to room temperature, and concentrated under vacuum. To remove the residual thionyl chloride, toluene was added and was concentrated to give 29.00 g (yield 84%) of the desired product, 4'-nitro-biphenyl-4-sulfonyl chloride.
References:
US2005/143422,2005,A1 Location in patent:Page/Page column 27
92-93-3
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20443-75-8
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