Method for the Synthesis of Phenothiazines via a Domino Iron-Catalyzed C–S/C–N Cross-Coupling Reaction
作者:Weiye Hu、Songlin Zhang
DOI:10.1021/acs.joc.5b00568
日期:2015.6.19
An environmentally benign and efficient method has been developed for the synthesis of phenothiazines via a tandem iron-catalyzed C–S/C-N cross-coupling reaction. Some of the issues typically encountered during the synthesis of phenothiazines in the presence of palladium and copper catalysts, including poor substrate scope, long reaction times and poor regioselectivity, have been addressed using this
Synthesis of polynuclear heterocycles. Part II. Cyclisations of 2- and 4-substituted 3-amino- and 3-nitro-pyridines
作者:J. J. Eatough、L. S. Fuller、R. H. Good、R. K. Smalley
DOI:10.1039/j39700001874
日期:——
Treatment of 2- and 4-phenoxy-3-nitropyridine with triethyl phosphite failed to yield the expected pyridobenz-oxazines; 2- and 4-phenylthio-3-nitropyridine, however, cyclised to give 5H-pyrido [2,3-b][1,4] benzothiazine and 5H-pyrido[3,4-b][1,4]benzothiazine respectively, albeit in poor yield. Similar results were obtained by thermolytic decomposition of the corresponding 2- and 4-substituted 3-azido-pyridines
用亚磷酸三乙酯处理2-和4-苯氧基-3-硝基吡啶不能得到预期的吡啶并恶唑。然而,将2-和4-苯硫基-3-硝基吡啶环化,得到5 H-吡啶[2,3- b ] [1,4]苯并噻嗪和5 H-吡啶[3,4- b ] [1,4]苯并噻嗪虽然收率差。通过相应的2-和4-取代的3-叠氮基吡啶的热解分解获得相似的结果。已经合成了9-羟基吡啶并[2,3- b ] 1,4,5-苯并二氮杂卓。
METHOD FOR ENHANCING THE ACTIVITY OF AN ENZYME
申请人:UNILEVER N.V.
公开号:EP1015544B1
公开(公告)日:2001-10-24
NOVEL TREATMENT FOR AGE RELATED MACULAR DEGENERATION AND OCULAR ISCHEMIC DISEASE ASSOCIATED WITH COMPLEMENT ACTIVATION BY TARGETING 5-LIPOXYGENASE