Application of 50501-07-0. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Ethyl indoline-2-carboxylate, is researched, Molecular C11H13NO2, CAS is 50501-07-0, about Reusable, homogeneous water soluble photoredox catalyzed oxidative dehydrogenation of N-heterocycles in a biphasic system: application to the synthesis of biologically active natural products. Author is Srinath, S.; Abinaya, R.; Prasanth, Arun; Mariappan, M.; Sridhar, R.; Baskar, B..
A simple and efficient method for the oxidative dehydrogenation (ODH) of partially saturated N-heterocycles (indolines, tetrahydro-β-carbolines and tetrahydro(iso)quinolines) e.g., I is described using a reusable, homogeneous cobalt-phthalocyanine photoredox catalyst II (R = SO3Na; M = Co) in a biphasic medium. A biphasic system offers an advantage of easy separation of the product and an efficient reusability of the homogeneous photoredox catalyst. Also, the current system significantly helps to overcome the solubility issue of the substrate and catalyst at room temperature Its potential applications to organic transformations are demonstrated by the synthesis of various biol. active N-heterocycles (indoles, β-carbolines, (iso)quinolines) e.g., III and natural products such as eudistomin U, norharmane, and harmane and precursors to perlolyrine and flazin. Without isolation and purification, the catalyst solution can be reused up to 5 times with almost comparable reactivity. Furthermore, the efficiency of the reaction was demonstrated on a gram scale. To the best of our knowledge, this is the first report on ODH reactions using a non noble, reusable and homogeneous cobalt photoredox catalyst under environmentally friendly conditions.
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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics