Photoredox‐Catalyzed Site‐Selective α‐C(sp
<sup>3</sup>
)−H Alkylation of Primary Amine Derivatives
作者:Melissa A. Ashley、Chiaki Yamauchi、John C. K. Chu、Shinya Otsuka、Hideki Yorimitsu、Tomislav Rovis
DOI:10.1002/anie.201812227
日期:2019.3.18
tertiary amines to oxidatively generate α‐amino radicals is well established, however, primary amines remain challenging because of competitive side reactions. This report describes the site‐selective α‐functionalization of primary amine derivatives through the generation of α‐amino radical intermediates. Employing visible‐light photoredoxcatalysis, primary sulfonamides are coupled with electron‐deficient
The surfaces of articles made of aluminum, such as annodized aluminum and bare aluminum, are treated with N-alkyl-fluoroaliphaticsulfonamidophosphonic acids or salts thereof to impart corrosion resistance to said surfaces.
A liquid composition useful for minimizing corrosion of aluminum surfaces comprising ethylene glycol or propylene glycol and fluoroaliphaticsulfonamidophosphonic acid or the salt thereof.