The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2022
Filed:
Jan. 30, 2018
Applicant:
Solvias Ag, Kaiseraugst, CH;
Inventor:
Heinz Steiner, Bubendorf, CH;
Assignee:
SOLVIAS AG, Kaiseraugst, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 231/22 (2006.01); C07C 269/00 (2006.01); C07D 257/06 (2006.01);
U.S. Cl.
CPC ...
C07D 231/22 (2013.01); C07C 269/00 (2013.01); C07D 257/06 (2013.01);
Abstract
An economic, one-step method for the production of N-substituted aromatic hydroxylamines of formula (I)R—N(OH)—C(═O)—(O)R  (I),with hydrogen, by catalytic hydration with possibly modified hydration catalysts in an aprotic solvent and in the presence of a halogen formic acid ester and in some cases in the presence of a base.