METHOD OF SYNTHESIS OF ARYLCHLOROSULFONYLBENZAMIDES Russian patent published in 1999 - IPC

Abstract RU 2135464 C1

FIELD: organic chemistry and chemical technology. SUBSTANCE: arylchlorosulfonylbenamides are synthesized by interaction of 3-sulfobenzoic acid dichloroanhydride with corresponding arylamine in the presence of toluene or dioxane as a solvent and pyridine at an equimolar ratio of 3-sulfobenzoic acid dichloroanhydride, arylamine and pyridine. Method exhibits the high degree of stereoselectivity being in use of benzylamine and morpholine as active amines since the use of a mixture of toluene and aliphatic C₅...C₇-hydrocarbon at their ratio from 10:0.5 to 10:20 (by volume) ensures to decrease the solubility of the end sulfonyl chlorides and decrease the probability of by-side reaction occurring. EFFECT: improved method of synthesis. 2 cl

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RU 2 135 464 C1

Authors

Tarasov A.V.

Moskvichev Ju.A.

Timoshenko G.N.

Grigorichev A.K.

Frolova O.B.

Dates

1999-08-27—Published

1997-04-21—Filed