Nitro-sulfobenzamides

C - Chemistry – Metallurgy – 07 – D

Patent

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Details

C07D 239/42 (2006.01) C07C 303/22 (2006.01) C07C 303/38 (2006.01) C07C 309/59 (2006.01) C07C 311/65 (2006.01) C07D 239/52 (2006.01) C07D 327/04 (2006.01) C07D 521/00 (2006.01) C07C 309/89 (2006.01) C07C 311/16 (2006.01)

Patent

CA 2390669

The present invention relates to a compound of formula (I) wherein R1 is an unsubstituted or substituted hydrocarbon radical having a total of 1 to 10 carbon atoms, preferably 1 to 6 carbon atoms, R2 is an unsubstituted or substituted hydrocarbon radical having a total of 1 to 10 carbon atoms, preferably 1 to 6 carbon atoms, or the group NR1R2 is a heterocyclic ring having 3 to 8 ring atoms which is unsubstituted or substituted and contains the nitrogen atom of the group NR1R2 as ring heteroatom and may also contain one or two further ring heteroatoms from the group consisting of N, O and S, and Q is H or a cation. The compounds of the present invention can advantageously be used for the preparation of sulfonylureas and their precursors such as sulfochlorides or sulfonamides.

La présente invention concerne un composé de la formule (I), dans laquelle R?1¿ représente un radical hydrocarboné substitué ou non ayant un total de 1 à 10 atomes de carbone, de préférence 1 à 6 atomes de carbone, R?2¿ représente un radical hydrocarboné substitué ou non ayant un total de 1 à 10 atomes de carbone, de préférence 1 à 6 atomes de carbone, ou le groupe NR?1¿R?2¿ représente un noyau hétérocyclique, présentant entre 3 et 8 atomes cycliques, substitué ou non, contenant l'atome d'azote du groupe NR?1¿R?2¿ comme hétéroatome cyclique, et peut également contenir un ou deux autres hétéroatomes cycliques du groupe constitué de N, O et S, et représente H ou un cation. En outre, on peut avantageusement utiliser les composés de cette invention pour préparer les sulfonylurés et leurs précurseurs, notamment les sulfochlorures ou les sulfonamides.

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