2-ketosulfonamides and process for their preparation

Details 2-ketosulfonamides and process for their preparation 2-ketosulfonamides and process for their preparation

1984-06-27

1986-12-09

Shippen, Michael L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560 12, 560150, 564 87, 564 88, 564 95, C07C14374, C07C14378

Patent

active

046281096

ABSTRACT:
The invention relates to new 2-ketosulfonamides of the formula ##STR1## and to a process for their preparation, wherein the 3-amino-2-sulfamoylalk-2-enoic acid esters of the formula ##STR2## obtained by reacting 3-aminoalk-2-enoic acid esters of the formula ##STR3## with amidosulfonyl chlorides of the formula X-SO.sub.2 -NH-R.sup.2, are subjected to hydrolysis and decarboxylation. The invention also relates to the 3-amino-2-sulfamoylalk-2-enoic acid esters which can be isolated as intermediates.

REFERENCES:
patent: 4448988 (1984-05-01), Gunther

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