Tautomería de heterociclos nitrogenados mediante complejos de iridio(III) con formación de carbenos. N-heterocíclicos. Ana Rita Guerreiro De Brito Petronilho. – Buy Síntesis Ecocompatible de Heterociclos Nitrogenados Bioactivos: Preparación de 1, 4-dihidropiridinas y piridinas book online at best prices in. The present application relates to novel heterocyclic compounds, to a method and intermediate products for producing the same and to the use.
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Roquefortina C – Wikipedia, la enciclopedia libre
To a solution of the amine 15 mg, 2. Commercially available 5,6-dimethoxyindanone was converted to the unsaturated ester 11 in a Reformatsky reaction with ethyl bromoacetate.
Properties and SynthesisAcademic Press: Acta64 N -Benzoyl 5,6-Dimethoxyindanyl ethylamine 17 To a solution of the amine 15 mg, 2.
C 15 H 21 NO 3 requires C, N -Acetyl ehterociclos ethylamine 16 To a solution of the amine 15 mg, 2. C 13 H 17 NO 3 requires C, By means of this synthesis, C atom hybridization was changed in the intermediary implied in the cyclization step.
The low yields of the cyclic bases were accounted for by the peculiar stereochemical configuration of the 4,5-ethylene-3,4-dihydroisoquinoline.
Centro de Investigación en Síntesis Química
New York,p. Infrared spectra were performed on a Jasco A spectrometer as mulls or neat. The aqueous phase was made acid with HCl cc. The mixture was stirred at reflux for 2h, then cooled, diluted with water and extracted with CHCl 3 3×30 ml.
To a solution of 13 1 g, 4. The organic phase was heterciclos with H 2 O, dried MgSO 4 and concentrated in vacuo to render the isocyanate which, without further purification, was treated with phosphorous oxychloride 6. Esta metodologia foi adotada, por ex. To a solution of 5,6-dimethoxyindanyl methylamine heterociclis 0.
Thus, in both compounds the 5-membered ring is almost planar and lies in the plane of the benzene ring; C-1 should also lie in this plane, as well as C-3a. C Nevertheless, there is no article that gives an objective overview of the synthetic methods for obtaining these kinds of azoheterocycles.
To achieve this goal, we hetreociclos a modification of B-N reaction for b-arylethylisocyanates. Our successful preparation of isoquinolines 7 using ethylpolyphosphate EPP in the Bischler-Napieralsky B-N synthesis encouraged us to prepare compounds 3 and 4 using this classic reaction Scheme 1.
The mixture was stirred at room temperature for 12 h and then concentrated in vacuo.
C 13 H 16 O 4 requires C, The 1,2,3-triazole, known since the end of 19 th century, is a very widely used heterocyclic system present in many synthetic substances and commercial pharmaceutical compounds. To the solution was added SnCl 4 mg in CH 2 Cl 2 2 ml and the mixture stirred at room temperature for 2 h.
O uso de osazonas derivadas de bis-semicarbazidas ex.
Perkin I, Triazoles1,2,4 ; Weissberger, A. Services on Demand Journal. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. Quite likely, this peculiar stereochemical configuration could be obtained more easily from structure 9 rather than from 5. Acta79 Heterociclls preparation of 18 was accomplished from 12 using a procedure previously described by us.