N-Carbalkoxymethylsulfamoyl thiophene carboxylic acid alkyl este

Details N-Carbalkoxymethylsulfamoyl thiophene carboxylic acid alkyl este N-Carbalkoxymethylsulfamoyl thiophene carboxylic acid alkyl este

1977-11-17

1979-01-16

Schwartz, Gerald A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C33318, C07C33324

Patent

active

041348982

ABSTRACT:
The present invention relates to compounds of the formula ##STR1## wherein A together with the two carbon atoms to which it is attached forms the group ##STR2## AND THE BROKEN LINE REPRESENTS THE DOUBLE BOND IN GROUP (A); R.sub.1 represents a lower alkyl group; R.sub.2 represents the residue of an aromatic heterocyclic ring containing from 1 to 4 hetero atoms, which may be substituted by one or two lower alkyl groups, or a phenyl group which may be substituted by halogen, hydroxy, lower alkyl, trifluoromethyl or lower alkoxy and R.sub.3 and R.sub.4 each represent a hydrogen atom or a lower alkyl group.

REFERENCES:
patent: 2658904 (1953-11-01), Galler

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