Добірка наукової літератури з теми "Tripyrromethanes"
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Статті в журналах з теми "Tripyrromethanes":
Ka, Jae-Won, and Chang-Hee Lee. "Optimizing the synthesis of 5,10-disubstituted tripyrromethanes." Tetrahedron Letters 41, no. 23 (June 2000): 4609–13. http://dx.doi.org/10.1016/s0040-4039(00)00672-9.
Ka, Jae-Won, and Chang-Hee Lee. "ChemInform Abstract: Optimizing the Synthesis of 5,10-Disubstituted Tripyrromethanes." ChemInform 31, no. 36 (June 3, 2010): no. http://dx.doi.org/10.1002/chin.200036124.
Král, Vladimír, Petr Vašek, and Bohumil Dolensky. "Green Chemistry for Preparation of Oligopyrrole Macrocycles Precursors: Novel Methodology for Dipyrromethanes and Tripyrromethanes Synthesis in Water." Collection of Czechoslovak Chemical Communications 69, no. 5 (2004): 1126–36. http://dx.doi.org/10.1135/cccc20041126.
Kral, Vladimir, Petr Vasek, and Bohumil Dolensky. "Green Chemistry for Preparation of Oligopyrrole Macrocycles Precursors: Novel Methodology for Dipyrromethanes and Tripyrromethanes Synthesis in Water." ChemInform 35, no. 40 (October 5, 2004). http://dx.doi.org/10.1002/chin.200440114.
Дисертації з теми "Tripyrromethanes":
Murat-Onana, Marie Laure. "N-hydroxylamines pyrroliques : precurseurs de bis(pyrrolyl)alcanes non symetriques et de α-n-hydroxyamino esters". Grenoble, 2010. http://www.theses.fr/2010GRENV060.
The pyrrole ring is present in many natural and biologically active compounds. Therefore, its intensive study in organic synthesis is of a great interest. Thus, the first acid-catalyzed reaction of pyrroles onto nitrones was reported by our team. According to the experimental procedure, either pyrrolic Nbenzylhydroxylamines or 2,2'-bis(pyrrolyl)alkanes were selectively produced. Pyrrolic Nhydroxylamines are important compounds and have been used as starting building blocks for the two methodologies described in this manuscript. Unsymmetrical bis(pyrrolyl)alkanes were obtained efficiently in one step, with high molecular diversity, by the reaction of pyrrolic N-hydroxylamines and various pyrroles. This method also allowed the preparation of symmetrical and unsymmetrical tripyrromethanes. Our results were applied to the preparation of unsymmetrical F-Bodipy® probes. They were obtained, in high yields and for the first time, directly from unsymmetrical 2,2'-bis(pyrrolyl)alkanes. Moreover, an axially chiral F-Bodipy® has been prepared. A-N-Hydroxyamino acids which are N-hydroxylated analogues of a-amino acids have been synthesized. A highly diastereoselective reaction between pyrrole and a suitable cyclic chiral nitrone yielded a pyrrolic N-hydroxylamine. A three-step sequence afforded the expected a-N-hydroxyamino ester in a good yield and a good enantiomeric excess (80%). This method has been applied to other pyrrolic, indolic and furanic heteroaromatics. No a-N-hydroxyamino acids holding these heterocycles in their structures were described. Good overall yields (36-62%) were obtained and good enantiomeric excesses, up to 98%