FR393085A - Perfectionnements au procédé de fabrication, au moyen de l'acide sulfureux de composés d'?-isatine-anilide et de ses homologues
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Perfectionnements au procédé de fabrication, au moyen de l'acide sulfureux de composés d'?-isatine-anilide et de ses homologues
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C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
C07D209/04—Indoles; Hydrogenated indoles
C07D209/30—Indoles; Hydrogenated indoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to carbon atoms of the hetero ring
C07D209/32—Oxygen atoms
C07D209/38—Oxygen atoms in positions 2 and 3, e.g. isatin
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FR393085D1907-10-011908-07-16Perfectionnements au procédé de fabrication, au moyen de l'acide sulfureux de composés d'?-isatine-anilide et de ses homologues
ExpiredFR393085A
(fr)
Procédé de fabrication de solutions stables ou de préparations solubles qui, outre des composés du fer, contiennent de l'acide quinotannique ou de ses combinaisons
Procédé pour l'obtention d'acide nitrique et d'acide sulfurique concentrés au moyen de l'acide nitrosulfurique ou de l'acide sulfurique nitreux
Substances de contact en platine, leur procédé de fabrication et leur application à la production de l'acide nitrique par l'ammoniac et l'air