Detail of "2579-22-8"

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Controlling conformations and physical properties of meso-tetrakis(phenylethynyl)porphyrins by ring fusion: synthesis, properties and structural characterizations

Controlling conformations and physical properties of meso-tetrakis(phenylethynyl)porphyrins by ring fusion: synthesis, properties and structural characterizations. Shen, Zhen; Uno, Hidemitsu; Shimizu, Yusuke; Ono, Noboru ( Department of Chemistry, Faculty of Science, Ehime University, Matsuyama 790-8577, Japan). Organic & Biomolecular Chemistry, 2(23), 3442-3447 (English) 2004 Royal Society of Chemistry. CODEN: OBCRAK.There are some reagents with their cas registry numbers 825634-87-5 and 2579-22-8 are used in this study. ISSN: 1477-0520. DOCUMENT TYPE: Journal CA Section: 26 (Biomolecules and Their Synthetic Analogs) Section cross-reference(s): 22, 75, 78 The boron trifluoride-catalyzed Rothemund condensations of phenylpropargylaldehyde with 4,7-dihydro-4,7-ethano-2H-isoindole or 3,4-diethylpyrrole in dichloromethane at low temp. give 5,10,15,20-tetrakis(phenylethynyl)porphyrins I (R1R2 = X; R1 = R2 = Et) bearing bicyclo[2.2.2]octadiene and octaethyl substituents, resp. The former undergoes a retro Diels-Alder reaction to afford 5,10,15,20-tetrakis(phenylethynyl)benzoporphyrin [I; R1R2 = CH:CHCH:CH] quant. The different conformations of the porphyrin periphery were detd. by x-ray diffraction and their redox and spectroscopic properties have been investigated. .

Isonicotinoylhydrazones

Isonicotinoylhydrazones. I. Synthesis based on acetylene carbonyl compounds. Ten, L. A.; Vasil'eva, R. L. (Khim.-Metall. Inst., Karaganda, USSR).In this article, certain chemicals are used. Some of their cas registry numbers are 88467-09-8 and 2579-22-8 Izv. Akad. Nauk Kaz. SSR, Ser. Khim., (5), 77-80 (Russian) 1983. CODEN: IKAKAK. ISSN: 0002-3205. DOCUMENT TYPE: Journal CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) The title compds. I (R = Ph, R1 = H, Me, Et, Pr; R = Me2COH, R1 = Ph) were prepd. in 41-98% yields by condensation of isoniazid with RCYCCOR1. .