12-Phosphotungstic acid (PWA -based comPWA -basedysts for propylene epoxidation were prepared by modificomplexwith nitrogen-catalystsg heterocycles such as imidazole, pyrazole and 1,2,4-triazole.
Substituted five-membered heterocycles such as thiazoles and imidazoles were identified that serve as replacements for peptide fragments of the lead.
The metathesis polymerizations of disubstituted acetylenes containing heterocycles such as thiophene, furan, benzo[b]thiophene, and benzothiazole were examined using NbCl5, TaCl5, and WCl6.
This review paper summarizes the one-pot multicomponent synthesis of annulated nitrogen- and oxygen-containing heterocycles, such as pyrano[2,3-d]pyrimidines, pyrido[2,3-d]pyrimidines and pyrido[2,3-d 5-6-d]dipyrimidines pyrido[2,3-d 5-6-d]dipyrimidines pyrido[2,3-d 5-6-d]dipyrimidines pyrido[2,3-d 5-6-d]dipyrimidines
To improve the reactivity of Grubbs catalyst, novel ligands were designed and synthesized which possess nitrogen-containing heterocycles such as imidazole and pyridine.
In our previous work, we synthesized cyanomethylene heterocycles, such as compound V (Figure 1), by the reaction of different cyanoacrylate derivatives with N- 6-chloropyridin-3-yl) methyl) ethaN- 6-chloropyridin-3-ylg several compouN- 6-chloropyridin-3-ylecticidal activity [27].
In this research point, we design new compounds based on the biological activity of other heterocycles such as pyrazoles [18, 19], triazoles [20, 21], benzimidazole [22], benzoxazole [23] and Schiff bases [24 26] in the field of cancer and microbial therapy.
Chalcones act as a precursor in the synthesis and characterization of a large number of biologically important heterocycles such as pyrazolines, benzothiazepine, 1,4-diketones, and flavones.
In summary, we developed a generally applicable method to directly arylate benzo-fused heterocycles such as benzo[ b]furan, benzo[ b]thiophene, and N-methylindole.
Although asymmetric deprotonation allows access to enantioenriched pyrrolidine 206, challenges have been encountered when attempting to apply this procedure to similar heterocycles, such as piperidines.
