One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, HPLC of Formula: C6H5NO4, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 25021-08-3, Name is 2-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetic acid, molecular formula is C6H5NO4
Investigations of Novel Azomethine Ylide-Forming Photoreactions of N-Silylmethylimides
The scope of a recently discovered (Yoon, E.C. et al.J.Am.Chem.Soc. 1995, 117, 2698), azomethine ylide-forming photoreaction has been explored by probing the excited state chemistry of several N-trimethylsilylmethyl substituted cyclic and acyclic imides and amide analogs.Photolysis of N-<(trimethylsilyl)methyl>maleimide (4) in acetonitrile leads to efficient production of the tricyclic product 16, formed by trapping of the photogenerated azomethine ylide intermediate 15 through cycloaddition with 4.Irradiation 4 in solutions containing high concentrations of the dipolarophiles, acrylonitrile or fumaronitrile, results in production of the products (19-21 and 23-24, respectively) arising by cycloaddition of the ylide 15 with the added dipolarophiles.In contrast, photolysis of the nonconjugated cyclic imide, N-<(trimethylsilyl)methyl>succinimide (5), brings about N-acyl migration resulting in the exclusive production of the unstable, iminolactone 30.On the other band, acyclic, N-trimethylsilylmethyl aroyl imides 6-8 undergo the excited state C to O silyl migration reaction to produce azomethine ylide intermediates 35.Both in the presence or absence of added dipolarophiles, these ylides undergo electrocyclization to form transient aziridine intermediates 36 which react further by ring opening to generate N-phenacylamide products 32-34.In contrast, the nonconjugated imide, N-<(trimethylsilyl)methyl>-N-acetylacetamide (9), is unreactive upon irradiation.Similarly, simple N-<(trimethylsilyl)methyl>amides 10-13, while being photochemically labile, do not react to form “trappable” ylide intermediates upon irradiation.The results outlined above are presented and discussed in terms of the scope and limitations of the new, azomethine ylide-forming photoreaction of silylmethyl imides.
One of the oldest and most widely used commercial enzyme inhibitors is aspirin, HPLC of Formula: C6H5NO4, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 25021-08-3
Reference£º
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem