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- W2381767890 abstract "Chlorosulfonyl-containing pyrazolone azo compounds (2a, 2b) have been prepared by reaction of the corresponding sodium sulfonate (la, 1b) with thionyl chloride in the presence of a catalytic quantity of N,N-dimethylformamide in dry benzene. The effects of reaction temperature, time, catalyst and solvent amount on the yield of 2a and 2b were investigated. The results show that chlorination of 1a and 1b under optical conditions gives 2a and 2b in 95.5% and 99.2% yield respectively. The given method is facile and suitable for large-scale synthesis." @default.
- W2381767890 created "2016-06-24" @default.
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- W2381767890 date "2004-01-01" @default.
- W2381767890 modified "2023-09-28" @default.
- W2381767890 title "Synthesis of Chlorosulfonyl-containing Pyrazolone Azo Compounds with Thionyl Chloride-DMF System" @default.
- W2381767890 hasPublicationYear "2004" @default.
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