Rao, G. Rama; Mogilaiah, K.; Reddy, K. Rajendar, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1988, vol. 27, # 1-12, p. 200 - 202
Two become one: A general catalytic hydrogen transfer-mediated α-functionalization of 1,8-naphthyridines is reported for the first time. The pyridyl α-site selectively couples with the C8-site of various tetrahydroquinolines to afford novel tetrahydro-1,8-naphthyridines (see scheme). The reaction features operational simplicity, a readily available catalyst and good functional group tolerance.
Through cooperative actions of iridium catalyst and NaOTf additive we report a new direct access to nitrogen bi-heteroarenes via hydrogen-evolution cross-coupling of the β-site of indoles/pyrrole with the α-site of N-heteroarenes. The reaction proceeds in an atom- and redox-economic fashion together with the merits of an easily available catalyst system, broad substrate scope, excellent functional
A practical approach to the direct α-methylation of 1,8-naphthyridines under mild reaction conditions has been developed using simple and readily available DMSO as a convenient and environmentally friendly carbon source.
New naphthyridine-based bipolar host materials for thermally activated delayed fluorescent organic light-emitting diodes
作者:Tzu-Chin Yeh、Jhen-De Lee、Lu-Yu Chen、Tanmay Chatterjee、Wen-Yi Hung、Ken-Tsung Wong
DOI:10.1016/j.orgel.2019.04.003
日期:2019.7
were synthesized and characterized. By adjusting the linkage topology, the physical properties are subtly tuned. The characteristics of devices employing these new bipolar hosts with green thermallyactivateddelayed fluorescence (TADF) emitter 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) employed as emitter were investigated under the same device structure. Among these hosts, carbazole-based
Catalytic activity in transfer hydrogenation using ruthenium (II) carbonyl complexes containing two 1,8-naphthyridine as N-monodentate ligands
作者:Juana Gajardo、Juan C. Araya、Andrés Ibáñez、Véronique Guerchais、Hubert Le Bozec、Sergio A. Moya、Pedro Aguirre
DOI:10.1016/j.ica.2018.10.037
日期:2019.2
N-monodentate fashion. The ruthenium(II) complexes have been studied as catalysts in the transfer hydrogenation of acetophenone. We found that complexes show moderate activities and a 100% selectivity. The best turnover frequency (390 h−1) is found for cis-[RuCl2(CO)2(2-(4′-methoxyphenyl)-1,8-naphthyridine-κN8)2] when the substrate/catalysis ratio was 1000/1. The catalytic conditions were optimized