Rh(III)-catalyzed oxidative synthesis of pyrazoles from azomethines and acrylamides
نویسندگان
چکیده
منابع مشابه
synthesis of sulfides from alcohols and thiols in solvent-freeconditions and deoxygenation of sulfoxides
کاتالیست یک سنتز جدید برای تیواترها توصیف شده است. واکنش الکل ها با آریل، هتروآریل و آلکیل تیو ل ها درحضور 1،3،5- تری آزو- 2،4،6- تری فسفرین-2،2،4،4،6،6 هگزاکلراید ((tapc به عنوان یک کاتالیست موُثر، بازده های خوب تا عالی از تیواترها را حاصل می کند. علاوه براین، واکنش تحت شرایط بدون فلز و بدون حلال پیش می رود، بنابراین یک مکمل جالب برای روش های شناخته شده سنتز تیواترها ارائه می دهد. یک مکانیسم ا...
15 صفحه اولSynthesis and Characterization of Some New Azomethines
The aim of the present paper is to extend our studies over some new derivatives of sulfonamidated aryloxyalkylcarboxilic acids as a class of a particularly high biological potential. In recent years the corresponding hydrazides of these acids and their condensation products, alhylhydrazones, were much attention paid to in virtue of their potential biological action. The synthesis stages of the ...
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An interesting and convenient procedure for the oxidative transformation of acetophenones and carbinols to primary benzamides has been developed. By using tetra-n-butylammonium iodide (TBAI) as the catalyst and tert-butyl hydroperoxide (TBHP) as the oxidant, the desired benzamides were isolated in moderate to good yields in aqueous solution. Notably, not only acetophenones but also propiophenon...
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An efficient silver-catalyzed oxidative cyclization of acrylamides with 1,3-dicarbonyl compounds is described. It proceeds through a tandem radical addition/cyclization process, in which two new C-C bonds were formed. Furthermore, the same concept can also be extended to the reaction of easily available ketones and acrylamides.
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2,6-Bis-arylated phenols are rarely reported and are synthetically challenging. Directed C-H functionalization reactions, using a directing group (DG), might provide a convenient solution to their synthesis. However, this strategy usually results in partial cleavage of the directing group, preventing further/second C-H activation cascades. Herein we report a general strategy that allows for the...
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ژورنال
عنوان ژورنال: Chinese Journal of Catalysis
سال: 2013
ISSN: 1872-2067
DOI: 10.1016/s1872-2067(12)60584-1