N,N-DIALKYLSUBSTITUTED 1-NITRONAPHTHALENE-5-SULFAMIDES AS SEMIPRODUCTS FOR SYNTHESIS OF 1-AMINONAPHTHALENE-5-SULFAMIDES Russian patent published in 1995 - IPC

Abstract SU 1707946 A3

FIELD: organic chemistry. SUBSTANCE: product: N,N-dialkylsubstituted of 1-nitronaphthelene-5-sulfamides in which the NR₁R₂-residue of aminomethylpropylamine, methylisopropylamine, methylbutylamine, ethylcyclohexylamine, morpholine or azepine can be used for synthesis as semiproducts for synthesis of 1-aminonaphthalene-5-sulfamides. Synthesis is carried out by reaction of 1-nitronaphthalene sulfochloride with corresponding amine in the presence of sodium carbonate in the medium of toluene as a solvent. Method involves elimination of high cost trifluoroacetic anhydride and decreased cost for purification. EFFECT: synthesis of new semiproducts, increased yield, decreased cost. 1 dwg, 5 tbl

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SU 1 707 946 A3

Authors

Janchene R.A.

Palajma A.I.

Bitene O.M.

Nedospasov A.A.

Dates

1995-12-20—Published

1989-02-08—Filed