4580-41-0Relevant academic research and scientific papers
Zwitterion-Catalyzed Isomerization of Maleic to Fumaric Acid Diesters
Lam, Ying-Pong,Lam, Zachary,Yeung, Ying-Yeung
, p. 1183 - 1190 (2021/01/09)
Fumaric acid diesters are important building blocks for organic synthesis. A class of zwitterionic organocatalysts based on an amide anion/iminium cation charge pair were found to be effective in catalyzing the isomerization of maleic acid diesters to give fumaric acid diesters. Comparison of the performance of different zwitterionic organocatalysts toward the reaction revealed that nonclassical hydrogen bonding was involved in the stabilization of the Michael adduct intermediate.
Liquid injection molding inhibitors for curable compositions
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, (2008/06/13)
Acetylenic maleates, fumarates and related derivative compounds are new compositions of matter having the formula: wherein R1 may be an organic moiety containing at least two carbon atoms triply bonded one to the other as: and R2 may be hydrogen, an organic moiety, or R1 ; suitable for use as liquid injection molding inhibitors either singly or in combination with themselves or other liquid injection molding inhibitors when used for the process of liquid injection molding curable compositions enabling an increase in the size of articles manufactured therefrom, which new compositions of matter cure into the polymerizable or curable resins thereby creating new compositions of matter as cured resins from which said articles of manufacture are produced.
