Preparation of n-phenyl(pyridyl)sulfonyldiamides

Details Preparation of n-phenyl(pyridyl)sulfonyldiamides Preparation of n-phenyl(pyridyl)sulfonyldiamides

C - Chemistry, Metallurgy

07

D

260/474.2, 260/2

C07D 213/80 (2006.01) C07D 285/16 (2006.01) C07D 513/04 (2006.01)

Patent

CA 1210400

ABSTRACT OF THE DISCLOSURE: A process for the preparation of N-phenyl(pyridyl)sulfonyldiamides by reacting a 2-aminobenzoic acid (nicotinic acid) deriva- tive with sulfur trioxide, chlorosulfonic acid or an adduct of sulfur trioxide with a tertiary amine in the presence of a diluent and of a tertiary amine, and react- ing the resulting sulfamate with a primary amine and a phosphorus halide, or by reacting a 2-aminobenzoic acid (nicotinic acid) derivative with an N-alkyl(cycloalkyl)- sulfamic acid or a salt of this acid in the presence of a diluent and of a phosphorus halide.

485601

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