Open AccessSelf‐Suspended Nanoparticles for N‐Alkylation Reactions: A New Concept for Catalysis
Author(s) -
Sarno Maria,
Cirillo Claudia,
Iuliano Mariagrazia
Publication year - 2019
Publication title -
chemistryopen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 29
ISSN - 2191-1363
DOI - 10.1002/open.201900104
Subject(s) - nanomaterial based catalyst , catalysis , nanoparticle , aniline , alkylation , reagent , chemistry , chemical engineering , dispersion (optics) , yield (engineering) , homogeneous , nanotechnology , organic chemistry , materials science , physics , optics , engineering , metallurgy , thermodynamics
The catalytic activity of snowman‐like and core‐shell Fe 3 O 4 /Au nanoparticles (NPs), obtained through a “wet chemistry” approach which directly restitutes nanocatalysts stable and highly active in the reaction medium, was tested towards N‐alkylation reactions. The nanocatalysts were tested for the synthesis of secondary amines. The core‐shell NPs, thanks to the surface properties, homogeneous dispersion and intimate connection with reagents in the catalyst medium, exhibited an excellent catalytic activity (e. g. >99 % yield and conversion of aniline in very short time and mild conditions). Owing to the magnetic part, the nanoparticles can be easily separated and reused, showing an almost stable activity after 10 cycles.