The various isomers of oxazolo- and thiazolopyridines having utility as antiinflammatory, antipyretic and analgesic agents are prepared by condensation of an appropriate amino-hydroxypyridine or amino-mercaptopyridine with a carboxylic acid, halide or anhydride.
Iron-Catalyzed Sulfur-Promoted Decyanative Redox Condensation of<i>o</i>-Nitrophenols and Arylacetonitriles: An Unprecedented Route to 2-Arylbenzoxazoles
作者:Thanh Binh Nguyen、Jerome Cheung Lung
DOI:10.1002/ejoc.201701607
日期:2018.11.15
Elemental sulfur and FeCl2·4H2O was found to be a highly efficient catalyst for decyanative redox condensation reactions of o‐nitrophenols with arylacetonitriles to produce a wide range of 2‐arylbenzoxazoles. Elemental sulfur was discovered to be a cyanide scavenger and an external reducing agent.
The various isomers of oxazolo- and thiazolopyridines having utility as antiinflammatory, antipyretic and analgesic agents are prepared by condensation of an appropriate amino-hydroxypyridine or amino-mercaptopyridine with a carboxylic acid, halide or anhydride.
349. Oxazolopyridines and oxazoloquinolines. Part I. 2′-Alkyl and 2′-aryl derivatives of oxazolo(4′ : 5′-3 : 4)pyridine and oxazolo(4′ : 5′-3 : 4)quinoline
作者:James Fraser、E. Tittensor
DOI:10.1039/jr9560001781
日期:——
Photochemistry of 2-phenyloxazolo[4,5-c]pyridine. Photoalkylation by diethyl ether