SDS of cas: 66-71-7. 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: 1,10-Phenanthroline, is researched, Molecular C12H8N2, CAS is 66-71-7, about Synthesis of Indoles by Palladium-Catalyzed Reductive Cyclization of β-Nitrostyrenes with Phenyl Formate as a CO Surrogate. Author is Ferretti, Francesco; Fouad, Manar Ahmed; Ragaini, Fabio.
The synthesis of indoles by reductive cyclization of o-nitrostyrenes using Ph formate as a CO surrogate, using a palladium/1,10-phenanthroline complex as catalyst was recently reported. However, depending on the desired substituents on the structure, the use of β-nitrostyrenes as alternative reagents may be advantageous. The results of this study on the possibility to use Ph formate as a CO surrogate in the synthesis of indoles by reductive cyclization of β-nitrostyrenes, using PdCl2(CH3CN)2+phenanthroline as the catalyst was reported. It turned out that good results obtained when the starting nitrostyrene bears an aryl substituent in the alpha position. However, when no such substituent present, only fair yield of indole was obtained because the base required to decompose the formate also catalyzes an oligo-polymerization of the starting styrene. The reaction performed in a single glass pressure tube, a cheap and easily available piece of equipment.
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