Facile synthesis of 6-aryl-3-pyridyl-1,2,4-triazines as a key step toward highly fluorescent 5-substituted bipyridines and their Zn(II) and Ru(II) complexes
摘要:
A wide series Of Substituted bipyridines were obtained through the synthesis of 1,2,4-triazines and their aza Diels-Alder reactions. The reported method facilitates the synthesis of functionally diverse bipyridines that provides fine-tuning of photophysical properties of new ligands and their Zn(II) and Ru(II) complexes. Some of substituted bipyridines exhibit 'off-on' fluorescence response toward Zn 2 cations. (C) 2008 Elsevier Ltd. All rights reserved.
合成了由异亚硝基-2-乙酰基萘和1,2-苯二胺制得的具有席夫碱的镍(II),铜(II)和锌(II)配合物。通过元素分析,FT-IR,UV-Vis以及1 H和13 C NMR光谱,电导率测量,磁化率测量和热分析对化合物进行表征。结果表明对称的席夫碱配体通过两个肟氧原子和两个偶氮甲碱氮原子的四齿配位。摩尔电导数据表明,合成的配合物是非电解质。
Synthesis and Chemiluminescence Properties of 6-(4-Methoxyphenyl)-2-methylimidazo[1,2-<i>a</i>]pyrazin-3(7<i>H</i>)-one and 2-Methyl-6-(2-naphthyl)imidazo[1,2-<i>a</i>]pyrazin-3(7<i>H</i>)-one
2-a]pyrazin-3(7H)-one (MCLA) and 2-methyl-6-(2-naphthyl)imidazo[1,2-a]pyrazin-3(7H)-one (NCLA), were prepared together with their oxyluciferin analogues, 2-acetamido-5-(4-methoxyphenyl)pyrazine (MCOLA) and 2-acetamido-5-(2-naphthyl)pyrazine (NCOLA). Various chemiluminescence properties of these compounds were compared with those of known luciferin analogues, 2-methyl-6-phenylimidazo[1,2-a]pyrazin-3(7H)-one (CLA)
Iodine-Catalyzed Radical C–H Amination of Nonaromatic Imidazole Oxides: Access to Cyclic α-Aminonitrones
作者:Alexey A. Akulov、Mikhail V. Varaksin、Anna A. Nelyubina、Anton N. Tsmokaluk、Dmitrii G. Mazhukin、Alexsei Y. Tikhonov、Valery N. Charushin、Oleg N. Chupakhin
DOI:10.1021/acs.joc.3c02230
日期:2024.1.5
A straightforward cross-dehydrogenativecouplingapproach to incorporate alicyclic amino residues into the structure of model cyclic aldonitrones, 2H-imidazole oxides, is reported. The elaborated C(sp2)–H functionalization is achieved by employing cyclic amines in the presence of the I2–tert-butyl hydroperoxide (TBHP) reagent system. As a result, a series of 19 novel heterocyclic derivatives were obtained
.beta.-Adrenergic blocking agents. I. Pronethalol and related N-alkyl and N-aralkyl derivatives of 2-amino-1-(2-naphthyl)ethanol
作者:Ralph Howe、A. F. Crowther、J. S. Stephenson、B. S. Rao、L. H. Smith
DOI:10.1021/jm00311a020
日期:1968.9
Untersuchungen in der Reihe der Isochinoline. IV. Teil. Synthesen von Benzo-Isochinolonen und Untersuchung der Methoden, Isochinoline aus dem Naphthalinring herzustellen