The synthetic route toward novel tricyclic, nitrogen-containing system is disclosed. Three compounds possessing structural features of 1,2,3,4-tetrahydroquinoxaline and decahydropyrido[3,4-b]pyrazine are synthesized starting from readily available precursors in six or seven steps, which the last three four steps respectively diastereoselective. Key reaction include N-acylation, Hofmann rearrang...

Abstract A Pd-Co bimetallic alloy encapsulated in melamine-based dendrimer supported on magnetic nanoparticles denoted as ?-Fe 2 O 3 @MBD/Pd-Co was synthesized by a facile co-complexation-reduction method and characterized sufficiently. The catalytic evaluation of showed promising results the Mizoroki–Heck Buchwald–Hartwig amination reactions various iodo-, bromo- challenging chloroarenes aqueo...

N-Alkoxycarbonyl / carbamoylmethyl substituted 1H-imidazol-2-yliden-Pd (II) complexes (Cat-1-5) were used for the first time as catalysts in Suzuki-Miyaura reaction between aryl bromides and arylboronic acids. All screened found to be excellent selected coupling 4-bromobenzaldehyde phenylboronic acid at room temperature. Cat-3 was shown most efficient one optimisation of conditions determining ...

A series of subporphyrin-based fluorescent probes bearing 1-aza-15-crown-5 or 1-aza-18-crown-6 moieties at the meso axial positions were prepared by Pd-catalyzed Buchwald-Hartwig amination reaction corresponding bromosubporphyrins. Both types aza-crown-ether-incorporated subporphyrins in solution and exhibited cation-dependent absorption fluorescence changes. In titration experiments, opposite ...