Synthetic Route of 497-25-6, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.497-25-6, Name is Oxazolidin-2-one, molecular formula is C3H5NO2. In a Article£¬once mentioned of 497-25-6
Toward polymers with oxazolidin-2-one building blocks through tetra-n-butyl-ammonium halides (Cl, Br, I) catalyzed coupling of epoxides with isocyanates
The selectivity of the reaction of 4,4-methylene diphenyl diisocyanate MDI with o-cresyl glycidyl ether OCGE yielding oxazolidin-2-one and isocyanurates, and applying tetra-n-butyl ammonium halide as catalysts is higher in the order chloride, bromide, iodide. The dominant reaction pathways were inferred from the reactivity of the system with various ratios of MDI to OCGE, and using IR spectroscopy to monitor the progress. The reaction proceeds in several steps with initial nucleophilic attack of the halide on the epoxide yielding an alkoxide intermediate. The alkoxide reacts with isocyanate to yield a carbamato intermediate that may either ring close to form oxazolidinone or catalytically form isocyanurates by addition of more isocyanate and backbiting. The formation of isocyanurate is the reaction with the lowest activation barrier. Isocyanurate acts also as an isocyanate precursor as it is ring opened by the alkoxide intermediates in a slower consecutive process. Oxazolidinone modified epoxy prepolymers could be prepared from bisphenol A diglycidyl ether and MDI.
We¡¯ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 497-25-6, and how the biochemistry of the body works.Synthetic Route of 497-25-6
Reference£º
Oxazolidine – Wikipedia,
Oxazolidine | C3H888NO – PubChem