A curing agent composition including at least one benzylated polyamine compound. The benzylated polyamine compound is a reaction product of a benzaldehyde compound or benzyl halide compound and a polyamine according to the following formula:
H2N—CH2-A-CH2-NH2
where A is a phenylene group or a cyclohexylene group. A method for making the curing agent composition and an amine-epoxy composition are also disclosed.
Merging electrocatalytic alcohol oxidation with C–N bond formation by electrifying metal–ligand cooperative catalysts
作者:Sitthichok Kasemthaveechok、Patrice Gérardo、Niklas von Wolff
DOI:10.1039/d3sc03408a
日期:——
Electrification of thermal chemical processes could play an important role in creating a more energy efficient chemical sector. Here we demonstrate that a range of MLC catalysts can be successfully electrified and used for imine formation from alcohol precursors, thus demonstrating the first example of molecular electrocatalytic C–N bond formation.This novel concept allowed energy efficiency to be increased
A Cascade Aza-Cope/Aza-Prins Cyclization Leading to Piperidine Derivatives
作者:Jothi L. Nallasivam、Rodney A. Fernandes
DOI:10.1002/ejoc.201403607
日期:2015.3
The cascadeaza-Cope/aza-Prinscyclization of homoallylamines to give substituted piperidines has been explored. The use of glyoxalic acid as the carbonyl component afforded bicyclic structures as a result of the internal carboxylate anion trapping the intermediate cation. The unimolecular bis-, tris-, and tetrakis(homoallylamine)s efficiently delivered the appended bis-, tris- and tetrakis(piperidine-4-ol)s