The invention describes a process for stabilizing an organic material against oxidative, thermal or light-induced degradation, which comprises incorporating therein or applying thereto at least a compound of the formula (I) wherein the general symbols are as defined in claim
1
. The compounds of the formula I are especially useful as processing stabilizers for synthetic polymers.
STEREOCHEMISTRY OF AMINE-CATALYZED KNOEVENAGEL REACTIONS
作者:Rikuhei Tanikaga、Naoto Konya、Aritsune Kaji
DOI:10.1246/cl.1985.1583
日期:1985.10.5
The amine-catalyzed Knoevenagel reactions of aldehydes and active methylene compounds containing two activating groups were found to involve many reversible steps, and the diastereomeric intermediary condensation compounds yielded thermodynamically stable products via carbanionic intermediates stabilized and sterically affected by two activating groups.