ChemInform Abstract: PYRIDINE RING‐OPENING IN 2,7‐DIAZABIPHENYLENE BY THIOPHOSGENEfused pyridine derivativesNo abstract is available for this article.doi:10.1002/chin.198324244R. HULLJ. A. H. MACBRIDEM. WARDLEWORTHP. M. WRIGHTJohn Wiley & Sons, Ltd...
In the presence of LiCl and perchloric acid the reaction consists of a pre-equilibrium protonation of the oxygen followed, first, by ring opening at oxygen accompanied by the entry of chloride or solvent, and then by displacement of the N-bonded pyridine-2-methanol to give [AuCl4]–. This...
By analyzing the intermediate products in pyridine degradation process, it was speculated that strain LV4 achieved pyridine ring opening and degradation mainly through two metabolic pathways: pyridine-ring hydroxylation and pyridine-ring hydrogenation. The rapid degradation of pyridine by strain LV4 in ...
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A mechanism involving hydration of the imidazole ring to give (178), cleavage to an N-nitroso compound (179) and recyclization was suggested 〈80KGS121〉. In another ring opening and reclosure, treatment of 7-nitroimidazo[4,5-c]pyridin-4(5H)-one (181) with hydrazine hydrate gave 7-...
The amination of aromatic CH bond via FeCl2-catalyzed ring opening of 2H-azirine leads to the synthesis of a pyrrolo[2,3-c]pyridine (Scheme 112).158 Sign in to download full-size image Scheme 112. The synthesis of 2-trifluoromethylpyrrolo[2,3-c]pyridine starting from 3-amino-4-methylpyr...
Yttrium– and Aluminum–Bis(phenolate)pyridineComplexes: Catalysts and ModelCompounds of the Intermediates for the Stereoselective Ring-OpeningPolymerizati... Yttrium–and aluminum–bis (phenolate)pyridine Complexes: catalysts and model compounds of the intermediates for thestereoselective ring-opening polyme...
Decarboxylative ring opening by the subsequently formed carboxylic acid yields the a-acyl amino ketone. Reactions of isocyanates Pyridine-catalyzed reactions of isocyanates with carboxylic acids to form amides are found to be strongly accelerated on replacement of pyridine by DMAP. Phenylacetic acid is ...
Decarboxylative ring opening by the subsequently formed carboxylic acid yields the a-acyl amino ketone. Reactions of isocyanates Pyridine-catalyzed reactions of isocyanates with carboxylic acids to form amides are found to be strongly accelerated on replacement of pyridine by DMAP. Phenylacetic acid is ...
Decarboxylative ring opening by the subsequently formed carboxylic acid yields the a-acyl amino ketone[29, 30]. Reactions of isocyanates Pyridine-catalyzed reactions of isocyanates with carboxylic acids to form amides are found to be strongly accelerated on replacement of pyridine by DMAP. Phenylacetic...