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US 11,198,669 B2Granted
Method for preparing primary diamines by Kolbe electrolysis coupling reaction
AssigneesRhodia Operations, BASF France SAS
InventorsMengjia Wu, Stéphane Streiff, Sergio Mastroianni
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Abstract
The present invention relates to a method for preparing primary diamines from amino acid compounds. Specifically, this invention is related to the preparation of a primary diamine from an amino acid and/or its salt by Kolbe electrolysis coupling reaction.
Claims17
A method for preparing a primary diamine of the general formula (II) from an amino acid compound of the general formula (I)
- H2N-T-COOX (I)
- H2N-T-T-NH2 (II)
- by a Kolbe electrolysis coupling reaction in a reaction medium comprising:
- a solvent,
- an electrolyte, and
- the amino acid compound of the general formula (I),
- wherein
- T represents a linear or branched C1-C10 alkylene group,
- X represents H+ or alkali metal cation,
- the reaction is performed under a current density of less than 400 mA/cm2.
7 more elements
Dependencies are inferred from the claim text.