Matches in SemOpenAlex for { <https://semopenalex.org/work/W3003232533> ?p ?o ?g. }
- W3003232533 endingPage "167" @default.
- W3003232533 startingPage "157" @default.
- W3003232533 abstract "Objective: A facile and efficient method for synthesis of 3, 4-dihydropyrimidin-2(1H)-ones via Biginelli reaction catalyzed by a novel dicationic Brönsted acidic ionic liquid, [(EtNH2)2SO][HSO4]2, has been successfully developed. Material and Method:: 3, 4-Dihydropyrimidin-2(1H)-ones were synthesized through one-pot condensation of aromatic aldehydes, ethyl acetoacetate, and urea under solvent-free conditions using [(EtNH2)2SO][HSO4]2 as a novel catalyst. The progress of the reaction was monitored by thin-layer chromatography (ethyl acetate / n-hexane = 1 / 5). The products have been characterized by IR, 1H NMR, 13C NMR, and also by their melting points. Results: In this research, a library of dihydropyrimidinone derivatives was synthesized via Biginelli reaction under solvent-free conditions at 120oC using [(EtNH2)2SO][HSO4]2 as a catalyst. Various aromatic aldehydes, as well as heteroaromatic aldehydes, were employed, affording good to high yields of the corresponding products and illustrating the substrate generality of the present method. In addition, the prepared dicationic Brönsted acidic ionic liquid can be easily recovered and reused. Conclusion: 1, 1’-Sulfinyldiethylammonium bis (hydrogen sulfate), as a novel dicationic ionic liquid, can act as a highly efficient catalyst for the synthesis of 3, 4-dihydropyrimidin-2(1H)-ones under solvent-free conditions." @default.
- W3003232533 created "2020-02-07" @default.
- W3003232533 creator A5056408491 @default.
- W3003232533 creator A5071381018 @default.
- W3003232533 date "2020-04-07" @default.
- W3003232533 modified "2023-09-25" @default.
- W3003232533 title "1, 1’-Sulfinyldiethylammonium Bis (Hydrogen Sulfate) as a Recyclable Dicationic Ionic Liquid Catalyst for the Efficient Solvent-free Synthesis of 3, 4-Dihydropyrimidin-2(1H)-ones via Biginelli Reaction" @default.
- W3003232533 cites W1805953322 @default.
- W3003232533 cites W1973641623 @default.
- W3003232533 cites W1977912960 @default.
- W3003232533 cites W1980665298 @default.
- W3003232533 cites W1981502317 @default.
- W3003232533 cites W1982357424 @default.
- W3003232533 cites W1983447994 @default.
- W3003232533 cites W1985564496 @default.
- W3003232533 cites W1985829984 @default.
- W3003232533 cites W1994093950 @default.
- W3003232533 cites W1994171082 @default.
- W3003232533 cites W1998126009 @default.
- W3003232533 cites W1998930619 @default.
- W3003232533 cites W2000413962 @default.
- W3003232533 cites W2003172326 @default.
- W3003232533 cites W2005744985 @default.
- W3003232533 cites W2015590681 @default.
- W3003232533 cites W2021787338 @default.
- W3003232533 cites W2024056059 @default.
- W3003232533 cites W2033021691 @default.
- W3003232533 cites W2034480770 @default.
- W3003232533 cites W2038818760 @default.
- W3003232533 cites W2039969208 @default.
- W3003232533 cites W2045197089 @default.
- W3003232533 cites W2047931406 @default.
- W3003232533 cites W2048018981 @default.
- W3003232533 cites W2053377634 @default.
- W3003232533 cites W2053498699 @default.
- W3003232533 cites W2053778488 @default.
- W3003232533 cites W2055992184 @default.
- W3003232533 cites W2056053816 @default.
- W3003232533 cites W2057683098 @default.
- W3003232533 cites W2057873552 @default.
- W3003232533 cites W2058974479 @default.
- W3003232533 cites W2060405287 @default.
- W3003232533 cites W2060892523 @default.
- W3003232533 cites W2066233467 @default.
- W3003232533 cites W2066416843 @default.
- W3003232533 cites W2077161685 @default.
- W3003232533 cites W2079680855 @default.
- W3003232533 cites W2087256448 @default.
- W3003232533 cites W2088362041 @default.
- W3003232533 cites W2089522355 @default.
- W3003232533 cites W2093290560 @default.
- W3003232533 cites W2098087079 @default.
- W3003232533 cites W2102512629 @default.
- W3003232533 cites W2107863131 @default.
- W3003232533 cites W2108507776 @default.
- W3003232533 cites W2122033201 @default.
- W3003232533 cites W2124579157 @default.
- W3003232533 cites W2126931959 @default.
- W3003232533 cites W2127457669 @default.
- W3003232533 cites W2129326815 @default.
- W3003232533 cites W2131122553 @default.
- W3003232533 cites W2174133289 @default.
- W3003232533 cites W2176535275 @default.
- W3003232533 cites W2176871389 @default.
- W3003232533 cites W2272276803 @default.
- W3003232533 cites W2286009163 @default.
- W3003232533 cites W2314790899 @default.
- W3003232533 cites W2320489831 @default.
- W3003232533 cites W2389518335 @default.
- W3003232533 cites W2464239183 @default.
- W3003232533 cites W2518497454 @default.
- W3003232533 cites W2519882335 @default.
- W3003232533 cites W2530262205 @default.
- W3003232533 cites W2558124832 @default.
- W3003232533 cites W2558559315 @default.
- W3003232533 cites W2564285213 @default.
- W3003232533 cites W2575467481 @default.
- W3003232533 cites W2586850203 @default.
- W3003232533 cites W2601682751 @default.
- W3003232533 cites W2605763712 @default.
- W3003232533 cites W2609792644 @default.
- W3003232533 cites W2619581214 @default.
- W3003232533 cites W2736395467 @default.
- W3003232533 cites W2743671081 @default.
- W3003232533 cites W2765854833 @default.
- W3003232533 cites W2776295185 @default.
- W3003232533 cites W2785022181 @default.
- W3003232533 cites W2791384782 @default.
- W3003232533 cites W2792150389 @default.
- W3003232533 cites W2793025805 @default.
- W3003232533 cites W2799949233 @default.
- W3003232533 cites W2801442224 @default.
- W3003232533 cites W2889123909 @default.
- W3003232533 cites W2890801761 @default.
- W3003232533 cites W2900189785 @default.
- W3003232533 cites W2905127803 @default.
- W3003232533 cites W2911066503 @default.
- W3003232533 cites W2916413924 @default.