Herein, a new Ag nanoparticle (Ag NP) loaded organic molecular cage is reported. The obtained Ag@1 can act as a highly efficient heterogeneous catalyst for the selectivereduction of nitroarenes to azocompounds under visible-light irradiation.
A Convenient One-Step Synthesis of 2-Hydroxy-1,3,5-Benzenetricarbaldehyde
作者:Andrew A. Anderson、Thomas Goetzen、Scott A. Shackelford、Stella Tsank
DOI:10.1080/00397910008086933
日期:2000.9
Abstract The hexamethylenetetramine/trifluoroacetic acid system was demonstrated to be capable of introducing three aldehyde groups into the phenol molecule. Facile, one-step procedures were developed for the preparation of hitherto difficult to synthesize 2-hydroxy-1,3,5-benzenetricarbaldehyde starting from either phenol or 4-hydroxybenzaldehyde. New pKa measurements showed 2-hydroxy-1,3,5-benzenetricarbaldehyde
the reaction mixture and the recovery of the organic cationic ionicliquids (OCILs) catalysts still need to be addressed. Post modification of the pyridine unit in the covalent organic framework (COF) via the formation of pyridinium salts with the chiral bromoacetate led to the chiral ionic COF with OCIL “immobilized”, which was utilized as a heterogeneouscatalyst for asymmetric Henry reactions with